Kensington House Antiques and Sterling Silver Kensington House
Antiques
All Items : Estate Jewelry : Platinum : Pre 1980 item #1021403
Kensington House Antiques
$9850.00
An exquisite platinum and diamond brooch in the form of a turtle by Tiffany & Co. In the 1990’s, Tiffany created a small line of nature-themed jewels loosely based on antique pieces in its design archives. The turtle pin was one of the most luxurious pieces in the series. The domed back is pave-set with 90 2.5-point round brilliant cut diamonds and the legs and head are set with additional 28 1.5-point diamonds. The eyes are collet-set blue sapphires. The back has a pendant hook, so it can be worn suspended from a chain. The reverse is marked “1996 Tiffany & Co. PT950”. The original selling price was $15,750.

Origin: America, ca. 1996. Condition: mint. Size: 29/32” x 1-3/8”. Weight: 14.5 grams. Approximate Total Diamond Weight: 2.67 carats.

All Items : Estate Jewelry : Platinum : Vintage : Pre 1980 item #513902
Kensington House Antiques
$2,195.00
Stunning platinum and diamond earrings in the "stile guirland" or "garland style" developed in Paris by Cartier, but first made fashionable by Queen Alexandra of England. Each earring is composed of a floral motif surmount, suspending a bow, suspending a wreath circled about another floral motif, suspending a teardrop. Each earring is fully articulated, so that all the parts move independently with the slightest movement. Each earring contains 51 round brilliant-cut diamonds of very fine color and clarity. The larger stones are collet-set, while the smaller stones are bead-set. The platinum setting is very finely millegrained. The backs are marked "PT900".

Origin: American, circa 1980. Condition: excellent; the posts are original and the clutches are 18 karat white gold replacements (a normal occurence, since clutches tend to wear out or get lost easily). Size: 2" long. Weight: 18.75 grams. Approximate Total Diamond Weight: 2.5 carats.

All Items : Estate Jewelry : Platinum : Vintage : Pre 1980 item #1279215
Kensington House Antiques
$2,850.00
An iconic "Lentils" necklace crafted in hematite by Angela Cummings for Tiffany & Co. Cummings began designing with lentil-shaped beads in late 1980 and it became one of her hallmarks. This hematite necklace is punctuated with a single platinum lentil pave-set with round brilliant diamonds (G/VS1). The brilliance of the diamonds is particularly nice against the dark color of the hematite. The clasp is signed "Cummings", "T&Co." and "IridPlat".

Origin: America, ca. 1985. Condition: excellent. Dimensions: 15-3/4" long; beads, 7/16" diameter. Total Diamond Weight: .70 ct.

All Items : Estate Jewelry : Platinum : Contemporary : Pre 1980 item #414436
Kensington House Antiques
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Elegant platinum and diamond bracelet designed by Elsa Peretti for Tiffany & Co. The bracelet features 23 collet-set 10-point round brilliant-cut diamonds spaced along a platinum chain. The diamonds are G color and VS clarity. The clasp is marked "Perretti T&Co 950". It currently (January 2013) retails at Tiffany for $10,500. Size: 7-1/8" long. Weight: 5.5 grams. Total Diamond Weight: 2.3 carats.
All Items : Estate Jewelry : Platinum : Contemporary : Pre 1980 item #1021536
Kensington House Antiques
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A stunning pair of platinum and 18K yellow gold earrings set with diamonds and rubies by Tiffany & Co. Each earring features four marquise cut diamonds set in the traditional “Victoria” crossed pattern, suspending a prong-set round mixed-cut ruby. The diamonds are set in platinum, while the rubies are set in 18K yellow gold, as tradition dictates. The diamonds are F color and VVS2 clarity. The rubies, of equally superb quality, are graded as medium vivid red color (R 5/6), excellent cut, and Type II eye-clean clarity. The quality of the rubies suggests they are Burmese in origin. Tiffany has not sold Burmese gems since 2003, so earrings such as these cannot be replaced. The posts are marked “T&Co PT950”. Victoria earrings, set only with diamonds, are currently available at Tiffany for $4650 (.72 ct) and $6500 (1.28 ct).

Origin: America, ca. 1995. Condition: excellent. Size: 15/32” x 5/16”. Weight: 3.3 gr. Approximate Total Gemstone Weight: diamond, .98 ct; ruby, .88 ct.

All Items : Estate Jewelry : Platinum : Vintage : Pre 1960 item #1407334
Kensington House Antiques
$4,200.00
A very fine pair of platinum, diamond and sapphire earrings in a classic line pattern. The brilliant round-cut diamonds graduate from .10 ct at the top to .20 ct at the bottom. The diamonds are finely matched at H color, SI1 to SI2 clarity, with good to very good cut. The modified-brilliant round-cut sapphires have a beautiful limpid medium violet-blue color, excellent brilliance and eye-clean clarity. Each stone is set in a fully articulated mounting with a pierced gallery. The earrings have screw posts. Tested and guaranteed platinum.
  • Dimensions: 1-9/16" long
  • Weight: 8.1 grams
  • Approximate Total Gemstone Weight: diamond, 2.4 carats; sapphire, 1.22 carats
All Items : Estate Jewelry : Platinum : Vintage : Pre 1960 item #997170
Kensington House Antiques
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A superb pair of vintage, mid-century platinum earrings with green tourmalines and diamonds. The large rectangular step cut tourmalines contrast beautifully with the surrounding ribbons of diamonds and the whiteness of the platinum settings. The pairing of tourmalines and diamonds isn’t terribly common and gives these earrings a special appeal. The tourmalines, of outstanding quality, are graded as very slightly bluish green hue, with medium dark tone and strong saturation (vslbG 6/5); 60% brilliance (very good); excellent cut proportions; good finish; and Type I eye-clean clarity. The round brilliant and single cut diamonds are estimated at H color, VSI clarity. Marked for platinum.

Origin: America, ca. 1955. Condition: excellent, tourmalines have slight wear at facet junctions visible at 10x magnification. Weight: 12.1 grams. Approximate Total Gemstone Weight: tourmaline, 14.0 carats; diamond, .66 carat.

All Items : Estate Jewelry : Platinum : Vintage : Pre 1960 item #1107082
Kensington House Antiques
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A very fine pair of platinum, diamond and aquamarine earrings in a classic Art Deco style. The brilliant round-cut diamonds graduate from .20 ct at the top to .30 ct at the bottom. The diamonds are finely matched at H color, VS1 to VS2 clarity, with good to very good cut. The brilliant oval-cut aquamarines have fine color color, very good brilliance and SI clarity. The aquamarines are unheated. Each gemstone is set in a fully articulated mounting with a pierced gallery. The earrings have screw posts. Tested and guaranteed platinum.

Size: 1-3/4" long. Total Gemstone Weight: diamond, 2.52 carats; aquamarine, 3.52 cts. Weight: 9.0 grams.

All Items : Estate Jewelry : Platinum : Vintage : Pre 1960 item #790100
Kensington House Antiques
$8,995.00
A magnificent vintage platinum brooch formed as a floral bouquet featuring three primary blossoms tied at the bottom with a ribbon, and set with a mix of old single cut, old Swiss cut, old European cut, old mine cut, early modern brilliant round cut and French cut diamonds and round brilliant cut sapphires. The center flower features a .83-carat, old mine cut diamond of fancy cognac color and SI2 clarity; surrounded by sapphires. A flower bud is represented just above by a prong-set .34-carat old European cut diamond of fancy light cognac color and VS2 clarity. Leaves are bead-set with mixed cut white diamonds, all in the E-G color range with VS1 to SI2 clarity. Berries are represented by collet-set blue sapphires. The sapphires display P2B zone 30 color (moderate purplish blue) on the Gem Dialogue scale and have VS clarity. The hinged double pinstem is worked in 14K white gold, but the body of the brooch is tested and guaranteed platinum.

The range of different diamond cuts in this brooch clearly indicates it was specially made to order for a customer using the diamonds already in her possession. Such commissioned pieces are often not fully hallmarked, hence the lack of a mark for platinum or a maker's mark. The quality of workmanship is superb.

The brooch is accompanied by a June 2008 written appraisal (GIA & NAJA) conforming to the above description and assigning a replacement value of $16,500.

Origin: America, ca. 1950. Condition: excellent, all original. Size: 2" x 1-1/4". Weight: 16.3 gr. Approximate Total Gemstone Weight: diamond, 1.84 carats (1.17 carats of fancy colored diamonds); sapphire, 2.1 carats.

All Items : Estate Jewelry : Platinum : Vintage : Pre 1950 item #1094785
Kensington House Antiques
$13,950.00
A stunning late Art Deco pair of diamond and palladium dress clips by Tiffany & Co. The clips are fully convertible with a duette mechanism into a single round brooch of substantial presence. Each clip features a pair of stylized flowers with curving foliage and are faintly in the cornucopia shape popular in Deco and Retro jewels. The clips are extremely versatile--they can be worn singly, as a pair or joined as the larger brooch. The diamonds are G color and VVS2-VS1 clarity. The back of each clip is marked "950 Palladium Tiffany & Co." and each as a scratched inventory number. The duette mechanism is worked in gold. The clips are presented in their original Tiffany box.

Origin: America, ca. 1940. Condition: excellent, all original. Size: 1-3/8" x 3/4" each; 1-3/8" x 1-1/2" joined. Weight: 16.4 grams. Approximate Total Diamond Weight: 4.88 cts.

All Items : Estate Jewelry : Platinum : Vintage : Pre 1940 item #1258422
Kensington House Antiques
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A fabulous Art Deco platinum brooch in the form of a carved hardstone Scottish Terrier sitting atop a diamond-encrusted platform surrounded by a leash as a sort of diamond-set halo. The dog is finely carved and enhanced with a matte finish. The 114 old mine and single-cut diamonds average H color and SI1 clarity. The back of the pin is finished with a double clip. The reverse is engraved "To Mama 6-8-36". The bottom edge of the gallery has what appears to be a heavily worn signature. Tested and guaranteed platinum.

Origin: Europe, probably Belgium, 1936. Condition: excellent, all original. Dimensions: 1-3/8" x 1". Weight: 15.4 grams. Approximate Total Diamond Weight: 2.85 carats.

All Items : Estate Jewelry : Platinum : Vintage : Pre 1930 item #1456235
Kensington House Antiques
$18,750.00
A stunning early Art Deco platinum bracelet set with diamonds and emeralds. The bracelet comprises seven rectangular plaques, each centered with an old European cut diamond. The plaques are hand-pierced in an ornate foliate pattern accented with a total of 84 smaller old European and single cut diamonds and 70 calibre-cut natural emeralds. The primary diamonds (two .44ct; two .46ct; two .55ct; and one .61ct) are very well matched and are graded G/SI1. Each plaque is slightly arched to accommodate the curve of the wrist. The clasp has a hidden safety catch and is stamped with French platinum hallmarks.

Origin: France, ca. 1925.

Condition: excellent, all original, normal wear to emerald surfaces consistent with age.

Size: 11/32” wide; 6-3/4” long.

Weight: 27.5 grams.

Approximate Total Gemstone Weight: diamond, 6.22 cts; emerald, 1.47 cts.

All Items : Estate Jewelry : Platinum : Vintage : Pre 1930 item #1334054
Kensington House Antiques
$11,950.00
An exquisite Art Deco platinum filigree ring set with a 1.14 carat old European cut diamond surrounded by caliber-cut onyx and coral in a sort of Moorish design. The diamond is graded as H color and SI1 clarity. All the stones are set in millgrained bezel settings. The surrounded coral has very saturated, even coloring that contrasts beautifully with the onyx and the sparkle of the diamond. Strong color contrast is especially associated with Art Deco jewels. The shank is set with three small diamonds to each side of the crown. The ring is completed with an ornately pierced gallery.

Origin: Ca. 1925. Condition: excellent. Dimensions: crown, 3/4" diameter. Finger Size: 7-3/4. Weight: 4.8 gr. Approximate Total Diamond Weight: 1.2 cts.

All Items : Estate Jewelry : Platinum : Vintage : Pre 1930 item #1384456
Kensington House Antiques
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A gorgeous Art Deco platinum mounting sprinkled with diamonds and featuring a pair of round brilliant cut aquamarines. The crown of the ring rises well up off the finger, creating a sort of umbrella effect that nestles the aquamarines. The diamonds larger diamonds in the setting are old European cuts and the smaller ones are single cuts. All are in the H/I color range with VS clarity. The mounting is finished with expert milgraining and ornate piercing.
  • Origin: America, ca. 1920.
  • Dimensions: 5/8” wide tapering to 1/16” at the back of the shank.
  • Finger Size: 7.
  • Weight: 5.3 grams.
  • Approximate Total Gemstone Weight: aquamarine, 2.14 carats; diamond, 1.0 carat.
  • Condition: excellent.
All Items : Estate Jewelry : Platinum : Vintage : Pre 1930 item #1320705
Kensington House Antiques
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A stunning Art Deco platinum bracelet, the links arranged in a zigzag pattern of bead-set round diamonds and channel-set square rubies. The overall design has the beautifully graphic, geometric appeal of the best French Art Deco jewels. The diamonds average VS clarity and G/H color. The rubies are similar quality, with medium dark, vivid red color (R6/6) and eye-clean clarity. The bracelet is masterfully constructed so it lies flat against the wrist and the links are individually hinged to provide movement that accents the glittery jewels. The bracelet is completed with its original hidden box clasp. The clasp is stamped with French 18K gold (for the clasp tongue and spring mechanism) and platinum (remainder of the bracelet) marks and with a partially worn master goldsmith’s mark. The bracelet was acquired from the collection of a Parisian lady who owned many pieces of superb quality from major houses such as Cartier, Perrin, and Boucheron.

Origin: France, ca. 1925. Condition: excellent; all original. Dimensions: 7/16†wide; 7-3/8†long. Weight: 45.5 gr. Approximate Total Gemstone Weight: ruby, 14.91 cts; diamond, 4.20 cts.

All Items : Estate Jewelry : Platinum : Vintage : Pre 1930 item #1019581
Kensington House Antiques
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A superb Art Deco platinum ring set with a cat’s-eye chrysoberyl cabochon flanked at each shoulder by a row of square step-cut diamonds. The chrysoberyl is of the finest quality, with a strong well-centered white eye against a strongly greenish-yellow background—precisely the combination that yields the desirable “milk and honey” effect. The cabochon is nicely cut and has very good symmetry. The diamonds are of exceptional quality, with D/E color and VS2 to SI1 clarity. The platinum mounting has a matte finish that nicely accents the stones. The interior of the shank is marked “Irid Plat”.

Origin: America, ca. 1925. Condition: excellent. Size: crown, 9/16” wide. Finger Size: 6-1/2. Weight: 9.0 grams. Approximate Total Gemstone Weight: chrysoberyl, 4.00 cts; diamond, .468 ct.

All Items : Estate Jewelry : Platinum : Vintage : Pre 1930 item #1038419
Kensington House Antiques
$22,500.00
A phenomenal Edwardian platinum, diamond and amethyst bow brooch by Cartier. Four tromp l'oeil amethyst loops, each surrounded in old European cut diamonds, flank a center 1.08 carat, J/K, VS2 old European cut diamond.

Each of the double loops of the bow appears to be set with two amethysts, but there is in fact only one amethyst on each side. The gemstones are precision-cut to fit perfectly into the platinum setting and give the appearance of being four stones. The amethysts are graded as medium, moderately strong Purple (P5/4) in color, with eye-clean clarity. This is the color and intensity sometimes termed "Siberian".

The 104 old mine cut and rose cut diamonds along the platinum borders total approximately 2.94 carats range from VS2 to SI2 clarity and H-J color.

The platinum setting is beautifully crafted, with a pierced gallery and engraved details around the collet setting of the center stone.

The brooch is hallmarked with the extremely rare master goldsmith's mark used by Cartier for only a three-year period, 1919-1922.

Origin: Paris, France, 1919-1922. Condition: very good, there is a small chip on the inside edge of each amethyst near the junction with the center diamond, visible upon very close inspection in strong raking light (one visible only from the reverse). Size: 3" x 27/32". Weight: 18.7 grams. Approximate Total Gemstone Weight: amethyst, 22.68 carats; diamond, 4.02 carats.

All Items : Estate Jewelry : Platinum : Vintage : Pre 1930 item #1298426
Kensington House Antiques
$1,695.00
A lovely Art Deco white gold and platinum filigree bracelet featuring three diamond-set frosted and engraved crystal plaques alternating with bezel-set pale blue spinels. The use of pale blue spinels the color of aquamarines is a very unusual treatment in a bracelet of this type, and the overall effect is very pretty. All the platinum surfaces are engraved in a delicate foliate motif. The clasp is stamped for 14K and platinum and has an unidentified maker’s mark.

Origin: America, ca. 1920. Condition: excellent, all original. Dimensions: crystal plaques, 9/16” wide; overall length, 8-1/8”. Weight: 10.0 grams. Approximate Total Gemstone Weight: spinel, 1.18 cts; diamond, .08 ct.

All Items : Estate Jewelry : Platinum : Vintage : Pre 1930 item #1307014
Kensington House Antiques
$9,850.00
An exquisite Art Deco platinum pendant in the form of a rose set with old mine cut, old European cut, single cut and pear cut diamonds. The design is delicately worked in a sort of stencil effect, the negative spaces between diamond-set areas appearing as the veins of leaves or the deeper recesses of the rose blossom. The center of the rose is set with a .96-ct pear shaped diamond, H/VVS2. The smaller diamonds are well-matched in the H range SI clarity. A diamond-set leaf-shaped bail completes the design. The mounting is stamped with European platinum marks.

Origin: Europe, possibly Poland, ca. 1925. Condition: excellent. Dimensions: 1-3/4" x 1-3/16". Weight: 9.4 gr. Approximate Total Diamond Weight: 4.6 cts (.96 ct pear).

All Items : Estate Jewelry : Platinum : Vintage : Pre 1930 item #1369328
Kensington House Antiques
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An elegant Art Deco ring in platinum set with diamonds, sapphires and a 7-mm pearl. The octagonal face is bordered with sixteen single-cut diamonds (H/SI2) enclosing a border of calibre-cut sapphires around the center pearl. The pearl has excellent luster and overtones. The inside of the shank is marked "10% Irid Platinum".

Origin: America, ca 1920

Condition: excellent, the pearl likely replaced a center diamond

Dimensions: crown 1/2" x 1/2"

Finger Size: 4-1/2

Weight: 6.0 grams

Approximate Total Gemstone Weight: diamond, .50 carat; sapphire, .25 carat

All Items : Estate Jewelry : Platinum : Vintage : Pre 1930 item #1334050
Kensington House Antiques
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An elegant Art Deco platinum filigree ring centered by a .70 old European cut diamond mounted in an octagonal surround of caliber cut synthetic sapphires (typical of genuine Art Deco period rings). The platinum setting is beautifully pierced at the front and the shank is engraved in a foliate pattern completely around. The diamond is graded as G/H color and VVS1 clarity, and has excellent cut with fine brilliance. The sapphires are bright and provide a nice pop of color. The interior of the shank is engraved with a pair of monograms and the date 2/19/27.

Origin: America, 1927. Condition: excellent, sharp detail. Dimensions: crown, 7/16” diameter. Finger Size: 6-1/4. Weight: 3.2 gr. Approximate Total Diamond Weight: .70 ct.

All Items : Estate Jewelry : Platinum : Vintage : Pre 1930 item #1338395
Kensington House Antiques
$24,500.00
A stunning Art Deco platinum ring featuring an antique cushion cut 9.03-carat Ceylon sapphire flanked on either side by three baguette diamonds arranged in a stepped pattern. The sapphire is graded on the GIA scale as vB5/4 (medium tone, moderate-strong saturation, violetish blue color), with eye-clean clarity and excellent cut. The stone's internal characteristics suggest Ceylon as the most likely origin. The overall look is a lovely cornflower blue with a tinge of violet mixed in. The stone is brilliant and easily stands up to the side diamonds, graded as F/VS1. The shank is stamped with French hallmarks for platinum and for 18K (the prongs holding the sapphire are 18K white gold). The interior of the shank is stamped with a serial number and a maker's signature that is now obscured. A stone of this size and quality, complete with a serial number, would suggest a major Parisian house as the maker.

Origin: France, ca. 1920. Condition: excellent; the shank is in very good condition; minute scattered facet junction wear on the sapphire. Dimensions: crown, 11/16" x 1/2". Finger Size: 6-1/4. Weight: 5.7 gr. Approximate Total Gemstone Weight: sapphire, 9.03 cts; diamond, .60 ct.

All Items : Estate Jewelry : Platinum : Vintage : Pre 1920 item #1202854
Kensington House Antiques
$3950.00
A lovely French garland-style pendant/brooch in platinum and set with diamonds. The garland style, popularized by Cartier, heavily borrowed Louis XVI motifs such as bows, ribbons and laurel wreaths—all seen in this example. When worked in platinum, the designs take on a delicate appearance and allow the diamonds to shine. The center old European cut diamond, graded as J/SI1, weighs .48 carat. The diamond hanging from an articulated millegrained knife-edge mounting has the same grading and weighs .35 carat. The smaller diamonds are a mix of antique cushion, rose and Swiss cuts. This piece has two small loops at the top of the back so it can be worn from a fine platinum chain. When worn as a pendant, the 18K gold brooch fitting can be unscrewed and removed entirely. Convertible fittings such as this were difficult to make and always signaled a piece of high quality. The hallmarks allow the pendant/brooch to be definitively dated prior to 1912.

Origin: France, ca. 1910. Condition: excellent, all original. Size: 1-11/16” x 1-9/16”. Weight: 10.8 grams. Approximate Total Diamond Weight: 2.15 carats.

All Items : Estate Jewelry : Platinum : Vintage : Pre 1920 item #1039922
Kensington House Antiques
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An exquisite Edwardian pendant and brooch featuring a large oval rubellite (pinkish-red tourmaline) cabochon surrounded by old European cut diamonds mounted in elegant buttercup settings. The diamond flower buds are mounted in an intricately interlaced knife-edge platinum setting. The back has a removable mounting so the piece can be worn as either a brooch or a pendant. Removable mountings of this type are very complex and appear on only the finest pieces from the period. The rubellite has fine color. Rubellites are usually very included, but this stone has far better clarity than most, graded as Type III slightly included. The diamonds range I-J in color and SI1-SI2 in clarity. Tested and guaranteed platinum.

Origin: probably France, ca. 1905. Condition: excellent, all original. Size: Weight: 6.6 grams. Approximate Total Gemstone Weight: diamond, 1.6 cts; rubellite, 5.08 cts.

All Items : Estate Jewelry : Platinum : Vintage : Pre 1920 item #1350968
Kensington House Antiques
$3,850.00
An impressive Edwardian pendant featuring a large cabochon amethyst and diamonds set in platinum. The amethyst is pierced and set with a .25ct H/SI1 diamond and surrounded by a halo of small old European cut and rose cut diamonds. The bail is similarly set with rose cut diamonds. The pendant has a very dramatic appeal, yet the openness of the setting keeps it from being overpowering. Tested and guaranteed platinum (chain is silver).

Origin: America, ca. 1915. Dimensions: 1-3/8” diameter (excluding bail). Weight: 13.7 gr. Approximate Total Gemstone Weight: amethyst, 32.75 cts; diamond, 1.25 cts.

All Items : Estate Jewelry : Platinum : Vintage : Pre 1920 item #1212584
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A stunning French Belle Epoque platinum negligee necklace set with old European and single-cut diamond and calibre cut blue sapphires. The fancy platinum chain, interrupted at regular intervals with natural seed pearls, joins to a gracefully arched diamond-set bar suspending old European cut diamonds leading an asymmetrical pair of semicircular plaques, each finished with a tassel of natural seed pearls. The term “negligee”, technically meaning “careless”, refers to the seemingly careless, uneven arrangement of the drop elements. The diamonds are graded as J/K color and I1 clarity. The necklace is stamped with French “tete de chien” marks for platinum.

Origin: France, ca. 1915. Condition: excellent, all original. Size: necklace length, 17-1/2”; pendant drop length, 2-1/4”. Approximate Total Gemstone Weight: diamond, .85 ct; sapphire, .16 ct. Weight: 9.5 grams.

All Items : Estate Jewelry : Platinum : Vintage : Pre 1920 item #1235052
Kensington House Antiques
$12,950.00
A large Edwardian puffed heart pendant/brooch worked in finely pierced platinum and set with nearly six carats of old European cut diamonds. Most Edwardian hearts are somewhat smaller than this generously-sized example. The design depicts a central blossom surrounded by scrolls around the edge of the heart. The center diamond is .60 carat, L color and SI2 clarity. The remaining 36 diamonds, totaling approximately 5.27 carats, are I/J color and SI1-I1 clarity. The back of the heart has a removable 14K yellow gold brooch fitting, as well as a platinum folding bail, so the piece can be worth as either a pendant or brooch. This fitting is very distinctive, and we have see puffed heart brooches of this sort signed Tiffany & Co. Tested and guaranteed platinum.

Origin: America, ca. 1910. Condition: excellent, all original. Dimensions: 35 x 35 mm (1-3/8 x 1-3/8 in). Weight: 21.2 gr. Approximate Total Diamond Weight: 5.87 cts.

All Items : Estate Jewelry : Platinum : Vintage : Pre 1920 item #1280850
Kensington House Antiques
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A fine Edwardian platinum and natural saltwater pearl necklace. The strand comprises 72 natural pearls of graduated sizes (3.7 to 5.0 mm) strung between platinum links. The pearls have symmetrical button shape, white body color with cream overtones, and excellent luster. The pearls are well-matched for size and quality throughout the strand. The necklace is finished with replaced 18K white gold clasp.

The necklace is accompanied by a gemological report from the Laboratoire Français de Gemmologie indicating that the pearls are natural saltwater.

Origin: France, ca. 1910. Condition: excellent, replaced clasp as noted. Dimensions: 17-5/8" long. Weight: 10.7 grams.

All Items : Estate Jewelry : Platinum : Vintage : Pre 1920 item #1434866
Kensington House Antiques
$1,795.00
A very fine Art Nouveau pendant formed from an exceptionally large natural freshwater pearl mounted in platinum and gold and set with diamonds. The floral platinum mounting features a .15 carat old European diamond and nine single-cut diamonds. The bail is shaped as a clover and is set with three additional diamonds. The pearl has fine luster with rose and green orient. Tested and guaranteed platinum and 14K gold. The contemporary chain is 14K white gold.
  • Origin: America, ca. 1910
  • Condition: excellent
  • Dimensions: pendant, 1-9/16" x 1/2"; chain, 16"
  • Weight: 5.5 grams
  • Approximate Total Diamond Weight: .45 carat
All Items : Estate Jewelry : Platinum : Vintage : Pre 1910 item #1039982
Kensington House Antiques
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A phenomenal Edwardian platinum and 18K gold brooch/pendant in the form of a caduceus set with 160 old European and old mine cut diamonds weighing approximately 2.90 carats. The principal stone is a square cushion cut, weighs approximately .28 ct, and is F color, VVS2 clarity. The smaller diamonds range F-I color, VS2 to I1 clarity. The diamonds are set in platinum over 18K yellow gold in the traditional French manner. The mounting is of the finest quality, with superb hand-sawn piercing and millegraining. This quality is further reflected in that the tiny portion of the bail that can be seen from the front when worn as a pendant is worked in platinum rather than gold like the remainder of the bail and the pinstem. The staff terminates at the top and bottom with a lustrous, slightly oval natural pearl.

The back of the piece has a pinstem that can be unscrewed and removed for wear as a pendant with the folding bail. The shape of the bail suggests that there was probably an optional comb fitting so that the piece could be worn as a hair ornament. The very finest quality and most expensive jewels of the era sometimes had various fittings so the owner could get as much use from a piece as possible.

The caduceus is the herald's wand carried by the Greek messenger god Hermes (and his Roman counterpart Mercury). It is sometimes topped with spread wings echoing the god's winged sandals. In contemporary usage it is the symbol of the medical profession. This linkage likely stems from the myth of the god Apollo sending Hermes to deliver his half-mortal son Aesculapius from the body of his dead mortal mother as her body was consumed by the fire of her funeral pyre. Aesculapius went on to become a healer and founded the cult of which Hippocrates, the founder of western medicine, was a follower.

Origin: France, ca. 1900. Condition: excellent, all original. Size: 2-3/8" x 2-3/8". Weight: 12.7 grams. Approximate Total Diamond Weight: 2.90 cts.

All Items : Estate Jewelry : Platinum : Vintage : Pre 1910 item #1210882
Kensington House Antiques
$3495.00
A fine and very lovely Art Nouveau pendant or brooch worked in platinum and 18K yellow gold, every visible surface is set with old mine cut and old European cut diamonds of various sizes. The design depicts are central flower surrounded by foliage twisted into whiplash curves and sprinkled with flower buds. The construction is very solid and quite heavy, but the openwork maintains a feeling of lightness. The back retains the original pinstem and safety clasp as well as a folding bale so the jewel can be worn as either a brooch or pendant. Tested and guaranteed platinum and 18K.

Origin: America, ca. 1905. Condition: excellent, all original. Size: 1-13/32” x 1-3/32” (excluding bale). Weight: 10.8 grams. Approximate Total Diamond Weight: 1.4 carats.

All Items : Estate Jewelry : Platinum : Vintage : Pre 1910 item #1212662
Kensington House Antiques
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A very fine round platinum, diamond and pearl brooch depicting a flower in full blossom being visited by a small insect. The flower’s leaves and petals are set with mine-cut diamonds, as are the insect’s wings. The insect’s body is formed from a small natural pearl and pearls also adorn the flower in several places. The delicacy of the design is amazing. The diamonds are very good quality and the pearls have lovely iridescence. The brooch retains its original safety clasp and 18K gold pinstem. The brooch is signed “Tiffany & Co.” and has an engraved inventory number. Tested and guaranteed platinum. This piece could be worn as a pendant simply by passing a fine platinum chain through one of the openings or by adding a folding bail.

Origin: America, ca. 1900. Condition: excellent, all original. Size: 1” diameter. Weight: 4.6 grams. Approximate Total Diamond Weight: .30 carat.

All Items : Estate Jewelry : Platinum : Vintage : Pre 1900 item #1082846
Kensington House Antiques
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A superb early Edwardian “style guirlande” platinum, gold, diamond, opal and pearl necklace. The fine platinum chain suspends a platinum and gold pendant centering a beautiful oval opal surrounded by an ornate swagged garland of diamonds punctuated with creamy natural pearls. The opal has strong and even play-of-color with strong flashes of bright green, a bit of blue and pale orange. The single cut and old European diamonds have beautiful color (F-H) and have clarity ranging from SI1 to I1. The center drop is articulated in three places, allowing lots of movement when being worn. The quality of workmanship is very fine, with completely hand-sawed openwork behind the stones, fine millegraining, and precise placement of stones. The back has a heavily worn maker’s mark, but the partial serial number would indicate a quality maker. Tested and guaranteed 14K gold and platinum.

Origin: America, ca. 1890. Condition: excellent, all original except the spring clasp which is 14K white gold instead of platinum. Size: necklace, 18-3/16” long; pendant, 2-7/8”W x 2-1/4”L. Weight: 9.0 gr. Approximate Total Gemstone Weight: opal, 1.01 cts; diamond, 1.61 cts.