Sold2021Art Deco Filigree Platinum Diamond Brooch PinMETAL: Platinum. GEMSTONES: Old mine cut diamonds total approx. 1.55ctw. Center diamond approx. 0.65ct. MEASUREMENTS: Brooch is 51mm x 19mm. TESTED: Plat. WEIGHT: 10.1 grams.Gemstones have not been grSee Sold Price
Sold2021VINTAGE TIFFANY & CO PLATINUM BOW 3ct DIAMOND BROOCHVINTAGE TIFFANY & CO. 3ct PLATINUM BROOCH PIN Brooch measures 1.85" H x 1.75" W Vintage Tiffany & Co. Platinum 3ct Diamond bow brooch with filigree design Center diamond apx 0.50ct Emerald cut Super cSee Sold Price
Sold2016A Lady's Platinum Three Stone Diamond RingPlatinum, vintage basket setting, with center diamond approx .30 ct and two side stones weighing approx .25 ct each, sz 7.5, 1 gram twSee Sold Price
Sold2021Vintage Platinum & Diamond Bow BroochOne 20-point center stone with channel set round and baguette diamonds. Very clean and brilliant diamonds. Unmarked. 1 3/4" x 1". 8.5 grams, inclusive. In good condition.See Sold Price
Sold2023VINTAGE PLATINUM & DIAMOND BRACELETset throughout with round, baguette and marquise diamonds approx. 14.70 carats (in our opinion: E-F color, VS-SI clarity, however not guaranteed), center marquise diamond approx. 0.60 carat (10.5x4.9xSee Sold Price
Sold2021Art Deco Platinum Old Mine Diamond Brooch PinArt Deco Platinum brooch with 14k gold stem, set with old mine cut diamonds. Center diamond approx. 0.65ct, side diamonds approx. - 0.84ctw. Brooch measures - 46mm x 19mm. Tested: Plat (brooch), MarkeSee Sold Price
Sold2021Mid Century Platinum 18k Gold Diamond Brooch PinMid century platinum and 18k yellow gold brooch with rose cut and old mine cut diamonds. Center diamond approx. 0.21ct, surrounding diamonds approx. 1.60ctw. Brooch is 48mm x 38mm. Tested: Plat, 18k.See Sold Price
Sold2020Antique Platinum 14K Gold Diamond Brooch PinMETAL: Platinum and 14k Gold. GEMSTONES: Old mine cut diamonds approx. 0.84ctw (center diamond approx. 0.62ct). MEASUREMENTS: Brooch is 38mm x 11mm wide. TESTED: Plat, 18k. WEIGHT: 3.7 grams.GemstonesSee Sold Price
Sold2024Vintage Platinum Diamond EngagementCenter Old Cut European Diamond approx. 1.75 ct K-VS1 clarity with bag sides. Total weight 2.9 grams. This lot is being offered on behalf of the New York County Public Administrator from the EstateofSee Sold Price
Sold2021DIAMOND & PLATINUM BOW BROOCH, C. 1920, L 2", T.W. 5 GRDIAMOND & PLATINUM BOW BROOCH, C. 1920, L 2", T.W. 5 GR 5 gr. A small very delicate brooch in bowknot form. L 2". center diamond approx 10pts.Four blue sapphire baguettes. Myriad of diamonds assembledSee Sold Price
Sold2020Art Deco Platinum Diamond Brooch PinArt Deco platinum brooch/pin decorated with mixed cut diamonds. Center stone- Old European cut diamond-approx. 0.79ct (VS2/I), two side stones-Old European cut diamonds-approx. 0.55ctw (SI1-SI2/I-J),See Sold Price
Sold20222.35 Ctw in Diamonds Platinum Flower BroochFlower Pin Brooch crafted in Platinum, set with a center Roun-cut Diamond Approx. 0.30 carats. F-G color, VS clarity. Along with 42 full cut Diamonds weighing Approx. 2.05 carats. G-H color VS-SI clarSee Sold Price
Sold2018Vintage Diamond, Platinum, 14k Yellow Gold Bow Brooch.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., accentSee Sold Price
Sold2022Platinum 1930’s Diamond Sapphires Brooch Platinum 1930’s Center Diamond Approx. 0.75ct I1-G Sapphires Brooch Measurements 1.71”x0.67”See Sold Price
Sold2022Antique 18k Gold Bow Brooch with Sapphires and DiamondsCirca 1910/30 Bow brooch crafted in 18k yellow Gold and Platinum, set with a center Diamond Approx. 0.20 carats. Along with 88 round cut Diamonds weighing Approx. 1.75 carats. 39 Natural Sapphires weiSee Sold Price
Sold2022Platinum Flowers Brooch with Diamonds and Sapphire GemstonesPlatinum Flowers Brooch with Diamonds and Sapphire Gemstones Stunning vintage brooch from the 1950's, engraved "July 1972" on side in script lettering. Platinum and palladium composition (tested), 23.See Sold Price
Sold2022Openwork Platinum and Diamonds Pin/Pendant - 5.33 CTTWOpenwork Platinum and Diamonds Pin/Pendant - 5.33 CTTW Vintage platinum pin/brooch with floral and ribbon design containing 67 European cut diamonds, diamonds measuring up to 0.62 ctw. (1.8mm - 5.5mmSee Sold Price
Sold2016A VINTAGE BAR PIN WITH DIAMONDS AND A PEARLA VINTAGE BAR PIN WITH DIAMONDS AND A PEARL Featured center pearl with old mine diamonds set in platinum. Open metal work is accented with milgrain edging. Brooch is 2.75" long. 1 off-round white pearSee Sold Price
Sold2023Vintage Platinum & diamond broochVintage Platinum & diamond brooch, c. 1950, set with a cluster of pear-shaped and marquise-cut diamonds, H-J color, VS-SI clarity, est. 10.0 carats, 2.5"l, approx. 18 dwt., illegibly stamped 869(?) PrSee Sold Price
Sold2019Vintage Platinum & Diamond Brooch or PinVintage fancy and large floral and bow brooch. 139 high quality diamonds with a approx. weight of 9.60ct set in a hand fabricated platinum setting. Unmarked, tested for platinum. approx 1.5" X 2" withSee Sold Price
Sold2022Vintage Platinum Diamond BroochVintage Platinum Diamond Brooch, Spectrometer tested platinum, with estimated approx. 1.35 carats diamonds both prong set and bead set also three baguette cut diamonds, pin mechanism works properly, 1See Sold Price
Sold2021JEWELRY. Vintage Platinum and Diamond Brooch.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. weigSee Sold Price
Sold2022Vintage Platinum Diamond Heart Brooch PendantThis is a vintage platinum heart shaped pendant/brooch studded with 48 Old European cut diamonds. SI-I clarity and GH-HI color. 1 3/8 x 1 3/8". It weighs a total of 8.1g. Draft title TW estimate seemsSee Sold Price
5 days LeftMiami Auctions & Appraisals LLC Vintage GIA Blue Sapphire Diamond Platinum Star Flower Brooch Pin$8,200