ART-DECO DIAMOND RINGcentered a roundcut diamond flanked by two smaller round cut diamonds in a pave style setting of fourteen smaller round cut diamonds set in a platinum band, marked with partially effaced...
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5.15CT. PLATINUM DIAMOND RINGcenterround brilliant diamond 5.15cts., H, I1, GIA report 2215849619, two baguette diamonds estimated total weight 0.16ct., remnant of stamp "Platinum", size 6-1/2, 4.9 gramsÿ,...
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PLATINUM DIAMOND RINGcenter round brilliantdiamond 2.90cts., I, SI2, GIA report 5211891936, two tapered baguette diamonds estimated total weight 0.36ct., illegible stamp and number, tested platinum, size 6-1/2, 5.6...
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PLATINUM DIAMOND RINGcenter round brilliantdiamond 2.26ct., H, SI1, GIA report 6213892152, two tapered baguette diamonds estimated total weight 0.16ct., stamped "10%IRID.PLAT, 27", size 5-3/4, 3.9 grams, Provenance:...
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PLATINUM DIAMOND RINGcenter round brilliantdiamond 1.98ct., G, VS2, GIA report 6214986757, two trillion diamonds estimated total weight 1.30cts., I-J, VS to SI, stamped "PLAT", size 5-1/2, 7.3 grams
Provenance: Private...
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PLATINUM DIAMOND RINGcenter oval cutdiamond estimated weight 2.0cts., F-H, I clarity, two tapered baguette diamonds estimated total weight 0.50ct., stamped "Handmade, 10%IRIDPLAT, AZ", size 5, 4.2 grams
Provenance:...
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PLATINUM DIAMOND RINGcenter emeraldcut diamond 2.75ct., K, SI1, GIA report 6224242403, two tapered baguette diamonds estimated total weight 0.48ct., stamped "10%IRIDPLAT, 276_53?", size 7-1/2, 5.4 grams
Provenance:...
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PLATINUM DIAMOND RINGcenter emeraldcut diamond, 3.60cts., H, VS2, GIA report 5221387575, two baguette diamonds estimated total weight 0.30ct., stamped "10%IRIDPLAT", size 5-3/4, 4.4 grams
Note: Brunk Auctions...
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ART DECO PLATINUM DIAMOND RINGcentermodified cushion cut diamond, 2.98cts., J, SI1, GIA report 1427398748, six baguette diamonds and 18 old cut round diamonds estimated total weight 0.47ct., mounting tested...
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PLATINUM DIAMOND RINGcenter cut ovaldiamond, 1.53cts., E, VS2, GIA report 10845822, two oval cut yellow diamonds estimated total weight 0.66cts., VS, stamped "PT950" and with maker's mark, platinum, side diamonds...
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PLATINUM, 10.17CT. SAPPHIRE AND DIAMONDRINGcenter rectangle step cut sapphire 10.17cts., Burmese origin, no evidence of heat/treatment, AGL Report CS 1075254, two half moon diamonds estimated total weight 1.80cts.,...
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OSCAR HEYMAN PLATINUM, EMERALD AND DIAMONDRINGcenter cushion cut emerald cabochon, 15.09cts, Colombian origin, insignificant treatment, GRS lab report GRS3013-031886, 40 round brilliant diamonds estimated total weight...
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ANTIQUE PLATINUM DIAMOND RINGcenterold European cut, estimated total weight 1.20cts., L-M, VS-SI, six old European cut diamonds, estimated total weight 0.56ct., G-I, SI, stamped "IRID-PLAT", size 5 3/4, 3.4...
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PLATINUM & DIAMOND RINGcentering oneround brilliant cut diamond [I/VS2] weighing approximately 10.04 carats, with GIA report no. 10287832, dated January 21, 1998; and two trillion cut diamonds [G-H/SI2-I1] weighing...
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PLATINUM, PINK SAPPHIRE, & DIAMOND RINGcenteringone octagonal step-cut natural purplish pink sapphire weighing 3.10 carats, with GIA report no. 2205997763; one emerald cut diamond [L/VS1] weighing 0.55 carats, with GIA...
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PLATINUM & DIAMOND RINGcentering oneround brilliant cut diamond [I-J/I1-I2] weighing approximately 0.60 carats; and two marquise brilliant-cut diamonds [J-K/VS] weighing approximately 0.10 carats total; 3.6...
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PLATINUM & DIAMOND RINGcentering onepear brilliant cut diamond [J/I2] weighing 7.60 carats, with GIA report no. 5211346698; with two tapered baguette cut diamonds [H/VVS] weighing approximately 0.40 carats total...
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PLATINUM & DIAMOND RINGcentering oneround brilliant cut diamond [I/SI1] weighing 5.72 carats, with GIA report no. 5212392624; and two pear shape brilliant cut diamonds [H/VS] weighing approximately 0.56 and...
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PLATINUM, DIAMOND, & RUBY RINGcenteringone oval mixed cut natural ruby weighing approximately 2.72 carats; 12 full cut round diamonds [H/VS] weighing approximately 0.84 carats total; and 28 tapered baguette cut...
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PLATINUM & YELLOW DIAMOND RINGcenteringone cut-corner rectangular modified brilliant cut diamond [Fancy Yellow/VS1] weighing 6.41 carats, with GIA report no. 14565040; and two trapeze shape step cut diamonds [G-H/VS]...
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PLATINUM, DIAMOND, & SAPPHIRE RINGcenteringone oval sapphire weighing 12.20 carats, with GIA report no. 6391218434 stating the sapphire is natural, unheated, of Burmese origin; with 16 full-cut diamonds [H-I/VS] weighing...
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PLATINUM, DIAMOND, & SAPPHIRE RINGcenteringone oval sapphire weighing approximately 4.00 carats; 10 full-cut diamonds [H-I/VS] weighing approximately 0.30 carats total; and eight tapered baguette-cut diamonds [H-I/VVS]...
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PLATINUM & DIAMOND RINGcentering oneround brilliant cut diamond [K-M/I2-I3] weighing approximately 1.60 carats total; 6.1 grams; size: 6 ½ Condition:...
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PLATINUM, DIAMOND & UNHEATED RUBY RINGCenterset with one cut-corner rectangular step cut natural ruby, 2.05 carats actual weight, corresponding to GIA ruby report #2225317053, dated March 4, 2022, surrounded by 16 cut-corner...
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18 KARAT GOLD, PLATINUM, & DIAMOND RINGCenterset with one Old European cut diamond [Fancy Light Brown/SI-2], approximately 0.72 carats, enhanced by six baguette cut diamonds [I-K/VS], total approximate weight 0.36 carats;...
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PLATINUM & DIAMOND RINGCenter prongset with two pear shape brilliant cut diamonds [G-I/VS], approximate total weight 0.36 ct. and two full cut round diamonds [H-J/VS], approximate total weight 0.20 carats,...
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SHREVE & CO. PLATINUM & DIAMOND RINGCenterprong set with one transitional Round Brilliant cut diamond [H-I/VS-2], approximately 0.67 carats, and two bezel set baguette cut diamonds [G-I/VVS], approximate total weight...
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Platinum Gold and Sapphire and DiamondRingcentering on one oval cut brilliant blue sapphire (12.15 x 10.00 x 4.35 mm) weighing 4.87 carats mounted in a four-prong platinum setting and flanked on each side with...
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Vintage Platinum Diamond Ringcenteringon one round brilliant cut diamond (approximately .96 carat) set in vintage fish tail prongs and accented on each side with (2) rows of single cut bead set round diamonds...
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Platinum Opal and Diamond Ringcenteringon one opal (approximately 2.95 carat) set in a six-claw prong setting flanked on each side with one full cut round diamond (approximately .40 total carat weight VS2-SI1 clarity...
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Platinum Emerald and Diamond Ringcenteringon one square cut emerald gemstone (approximately 2.73 carat) (8.50 x 8.30 x 6.18 mm) prong set and flanked on each side with one princess cut diamond (approximately .50 carat...
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Platinum and Diamond Ringcentering onone round brilliant cut diamond (3.29 carat) (SI1 clarity J color) set in four-prong platinum mounting and flanked on each side by a tapered baguette cut diamond (approximately...
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Platinum Sapphire and Diamond Ringcenteringon one oval cut sapphire (approximately 3.11 carat) in yellow gold four-prong setting and flanked on each side by one trillion cut diamond (approximately .90 total carat weight)...
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Platinum and Diamond Ringcentering onone round brilliant cut diamond (2.63 carat) prong set in platinum and flanked on each side with one straight baguette diamond (approximately .10 total carat weight) bar and...
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Vintage Platinum and Diamond Ringcenteringon one round brilliant cut diamond (approximately .83 carat) set in (4) vintage fishtail prongs and with one straight baguette (approximately .20 total carat weight) bar set...
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Platinum Diamond and Sapphire Ringcenteringon one natural round sapphire (approximately 1.46 carats) (7mm) and flanked on each side by one round brilliant cut diamond (approximately 2.00 total carat weight) gemstones...
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