Kensington House Antiques and Sterling Silver Kensington House
Antiques
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 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 #1334050
Kensington House Antiques
$4,500.00
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 #1320705
Kensington House Antiques
$17,500.00
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 #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 #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 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 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 : 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 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 1910 item #1212662
Kensington House Antiques
$2495.00
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 1920 item #1212584
Kensington House Antiques
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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 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 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 1930 item #1140536
Kensington House Antiques
$18,500.00
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 1910 item #1140533
Kensington House Antiques
$1895.00
A very fine Art Nouveau pendant comprising an exceptionally large natural freshwater pearl mounted in platinum set with diamonds. The mounting is in floral form, the leaves set with nine single-cut diamonds accented with another .15-ct old European cut diamond. The jump ring is worked in the form of a platinum clover set with three small diamonds. The pearl has fine luster with noticeable rose and green orient. This piece is a delightful example of freshwater pearl jewelry. Tested and guaranteed platinum and 14K gold.

Origin: America, ca. 1910. Condition: excellent. Size: 1/2" x 1-9/16”. Weight: 5.5 grams. Approximate Total Diamond Weight: .45 ct.

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 #1107081
Kensington House Antiques
$4200.00
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.

Size: 1-9/16" long. Total Gemstone Weight: diamond, 2.4 carats; sapphire, 1.22 cts. Weight: 8.1 grams.