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Catalogue: Estate Jewelry: Platinum (17)

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Platinum, Diamond & Aquamarine Drop Earrings

Catalogue: Estate Jewelry: Platinum: Vintage: Pre 1960   item# 1107082

Platinum, Diamond & Aquamarine Drop Earrings
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Kensington House Antiques
(301)942-0955


$4895 

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.


Art Deco Style Platinum Diamond Sapphire Earrings

Catalogue: Estate Jewelry: Platinum: Vintage: Pre 1960   item# 1107081

Art Deco Style Platinum Diamond Sapphire Earrings
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Kensington House Antiques
(301)942-0955


$4200 

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.


Tiffany Art Deco Platinum Diamond Dress Clips / Brooch

Catalogue: Estate Jewelry: Platinum: Vintage: Pre 1950   item# 1094785

Tiffany Art Deco Platinum Diamond Dress Clips / Brooch
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Kensington House Antiques
(301)942-0955


$13,950 

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.


Edwardian Platinum Gold Diamond Opal Pearl Necklace

Catalogue: Estate Jewelry: Platinum: Vintage: Pre 1900   item# 1082846

Edwardian Platinum Gold Diamond Opal Pearl Necklace
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Kensington House Antiques
(301)942-0955


$4850 

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.


Edwardian Platinum Diamond Pearl Caduceus Pin/Pendant

Catalogue: Estate Jewelry: Platinum: Vintage: Pre 1910   item# 1039982

Edwardian Platinum Diamond Pearl Caduceus Pin/Pendant
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Kensington House Antiques
(301)942-0955


$4850 

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.


Edwardian Platinum Diamond Rubellite Pendant/Brooch

Catalogue: Estate Jewelry: Platinum: Vintage: Pre 1920   item# 1039922

Edwardian Platinum Diamond Rubellite Pendant/Brooch
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Kensington House Antiques
(301)942-0955


$3295 

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.


Edwardian Cartier Platinum Diamond & Amethyst Bow Pin

Catalogue: Estate Jewelry: Platinum: Vintage: Pre 1930   item# 1038419

Edwardian Cartier Platinum Diamond & Amethyst Bow Pin
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Kensington House Antiques
(301)942-0955


$22,500 

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.


Tiffany Platinum 18K Diamond Ruby VICTORIA Earrings

Catalogue: Estate Jewelry: Platinum: Contemporary: Pre 1980   item# 1021536

Tiffany Platinum 18K Diamond Ruby VICTORIA Earrings
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Kensington House Antiques
(301)942-0955


$4250 

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.


Tiffany Diamond Platinum NATURE Turtle Pin/Pendant

Catalogue: Estate Jewelry: Platinum: Pre 1980   item# 1021403

Tiffany Diamond Platinum NATURE Turtle Pin/Pendant
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Kensington House Antiques
(301)942-0955


$9850 

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.


Art Deco Platinum, Cat’s-Eye Chrysoberyl & Diamond Ring

Catalogue: Estate Jewelry: Platinum: Vintage: Pre 1930   item# 1019581

Art Deco Platinum, Cat’s-Eye Chrysoberyl & Diamond Ring
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Kensington House Antiques
(301)942-0955


SOLD, PLEASE VISIT US AGAIN 

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.

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