A VINTAGE DIAMOND & SYNTHETIC SAPPHIRE BOW BROOCH in platinum, set with a central old cut

Vintage Diamond and Sapphire Bow Brooch, Tiffany & Co.the delicate platinum bow with milgrain detailing and set with full cut round diamonds weighing approximately 1.15 total carats (F-G color, VS cla

A platinum brooch set with approximately 1.50ctw of old mine cut diamonds separated by synthetic sapphires. The brooch measures 43mm x 23mm and weighs 6.0 grams.Gemstones have not been graded for colo

estimated weight 1.40 ct, estimated colour I-J, estimated purity P. Flanked by two synthetic sapphires, trapeze cut. .

VINTAGE LADY'S PLATINUM AND 14K WHITE GOLD RING, cushion-shape top set with a central synthetic sapphire surrounded by 16 mine cut or antique single cut melee diamonds, not marked. Diamonds: approxima

A VINTAGE DIAMOND BROOCH in platinum, set throughout with old cut diamonds, the diamond totalling 2.0-2.2 carats, Portuguese assay marks, 4.0cm, 10.6g. 

One Art Deco period lady's round platinum diamond & sapphire brooch. The brooch measures approx. 1.50" round and features a total of twenty-three (23), bead set old mind cut diamonds measuring 1.70 -

A VINTAGE DIAMOND PLAQUE BROOCH, 1930s, in 18ct yellow gold and platinum, the openwork brooch set throughout with old cut diamonds, the diamonds totalling 3.0-3.5 carats, stamped 18ct and PL, 4.6cm, 7

The exceptionally fine handmade art deco brooch is set with 212 old mine cut diamonds, 20 square calibre cut diamonds and 52 calibre cut sapphires set in platinum. The brooch has an approx. diamond we

Vintage circular platinum openwork brooch with central Old European cut diamond measuring approx. 4.0mm surrounded by single cut, round brilliant cut, and Old European cut diamonds. Total approx. weig

Edwardian Platinum and Diamond Brooch/Pendant ca. 1910, the circular platinum brooch with an openwork lacy pattern set with a central old European-cut diamond, surrounded by smaller European-cut diamo

A VINTAGE AQUAMARINE AND DIAMOND BOW BROOCH, CIRCA 1950 in platinum and 18ct white gold, set with two tapered fancy cut aquamarines, accented by rose cut, single cut and round brilliant cut diamonds,

Art Deco platinum brooch displaying a central bezel set Old Mine cut diamond flanked by (2) bezel set Old Mine cut diamonds and further accented by a surround of smaller Old Mine cut diamonds. Central

Title: Art Deco Sapphire Diamond Ring Platinum Vintage .60 TDW Additional Information: This beautiful vintage Art Deco ring is finely crafted in luxurious Platinum and set with old mine cut diamonds a

A DIAMOND AND ENAMEL BROOCH, EARLY 20TH CENTURY in platinum and yellow gold, the oval body of openwork design, set with a central old cut diamond between panels of blue guilloche enamel, accented by f

Baume - A diamond, sapphire and rock crystal flower brooch, with five shaped and frosted carved petals of rock crystal around a central claw set old cut diamond and five round facetted sapphire set st

weighing approximately 10.0 grams. crafted in solid Platinum, this exquisite piece is adorned by an outstanding (4) Large Genuine Diamonds round-cut, prong-set, ( G-H color and VS clarity) & (16) Larg

Art Deco brooch set with European and rose-cut diamonds, weighing in total approximately 0.90ct; with European marks; length: 2 in. (loss of one diamond and sapphire)

Nice looking Art Deco Brooch crafted in Platinum, Set with Old mines and Rose cut Diamonds Approx. 1.48ctw (Center Old mine Diamond is Approx. 0.50cts. H color, SI clarity). Accented with Natural Blue

A SAPPHIRE AND DIAMOND BROOCH The openwork brooch set with a central circular-cut sapphire, within a surround of old brilliant-cut diamonds in square millegrained settings, further issuing curved rows

Vintage Diamond, Platinum, 14k Yellow Gold Bow Brooch. Designed as an open work bow with black velvet backing, the center featuring one old European-cut diamond weighing approximately 0.30 ct., accent

Including one ring featuring twenty-one old European-cut diamonds weighing a total of approximately 1.25 cttw. set in a platinum mounting, size 6 1/4; together with a pair of matched rings, each featu

The rectangular platinum brooch with bow detail is set with 31 Old European cut single and full cut round Diamonds [H/SI], approximate total weight 1.00 carats, accented at the corners with eight trap

Platinum Topped Gold and Gem-Set Ringthe platinum rectangular filigree mount centering on a bezel set old European cut diamond with rose cut diamond melee and with synthetic sapphire accents, testing

Pair of Art Deco-Style Diamond and Sapphire Drop Earrings platinum, each with a central old European-cut diamond within a ring of calibre-cut sapphires, in navette-shaped plaques set with round brilli