Sold2023Blue Nile Platinum Diamond Engagement Ring MountingMETAL: Platinum. GEMSTONES: Diamonds 1.14ctw VS2-H. MEASUREMENTS: Ring size 6 1/4, center will fit approx. 4.50ct stone. MARKED: Maker's logo mark, PT950, 79204. WEIGHT: 11.9 grams. Comes with copSee Sold Price
Sold2024Blue Nile Platinum Diamond Engagement Ring SettingMETAL: 18k Gold. GEMSTONES: Diamonds approx. 1.00ctw. MEASUREMENTS: Ring size 5 3/4, center will fit approx. 5.5mm stone. MARKED: Maker's logo mark Plat. WEIGHT: 6.6 grams.Gemstones have not beenSee Sold Price
Sold2023Blue Nile Platinum Diamond Engagement Ring MountingMETAL: Platinum. GEMSTONES: Diamonds approx. 0.30ctw. MEASUREMENTS: Ring size 7 1/2, center of the ring will, keep approx. 9mm x 8mm stone. MARKED: Maker's logo mark, Pt950, 73172. WEIGHT: 6.5 graSee Sold Price
Sold2021Blue Nile Platinum Diamond Engagement Ring MountingMETAL: Platinum. GEMSTONES: Diamonds approx. 0.18ctw. Center of the ring will keep approx. 7 - 7.5mm stone. MEASUREMENTS: Ring size 4 1/4, ring shank is 1.7mm wide. MARKED: Maker's Symbol, PT. WEISee Sold Price
Sold2021Blue Nile Platinum Diamond Engagement Ring MountingMETAL: Platinum. GEMSTONES: Diamonds approx. 0.12ctw. Center of the ring will keep approx. 5.5mm x 6mm stone. MEASUREMENTS: Ring size 6 1/4, ring shank is 2.8mm wide. MARKED: Maker's mark PT. WEIGSee Sold Price
Sold2022Blue Nile Platinum Diamond Engagement Ring MountingMETAL: Platinum. GEMSTONES: Diamonds approx. 0.24ctw. Center of the ring will keep approx. 3.5mm -3mm stone. MEASUREMENTS: Ring size 7 3/4. MARKED: Maker's mark PT. WEIGTH: 4.2 grams.Gemstones havSee Sold Price
Sold2022Blue Nile Platinum Diamond Engagement Ring MountingMETAL: Platinum. GEMSTONES: Diamonds approx. 0.12ctw. Center of the ring will keep approx. 5.2mm x 5mm stone. MEASUREMENTS: Ring size 4 1/4. MARKED: Maker's mark PT. WEIGHT: 4.2 grams.Gemstones haSee Sold Price
Sold2022Blue Nile Platinum Diamond Engagement Ring MountingMETAL: Platinum. GEMSTONES: Diamonds approx. 0.12ctw. Center of the ring will keep approx. 5mm x 4.5mm stone. MEASUREMENTS: Ring size 6,ring top is 7.8mm wide. MARKED: Maker's mark BL, PT950. WEIGSee Sold Price
Sold2022Blue Nile Platinum Diamond Engagement Ring SettingMETAL: Platinum. GEMSTONES: Diamonds approx. 0.10ctw. Center of the ring will keep approx. 4.8mm x 4mm stone. MEASUREMENTS: Ring size 8 1/2. WEIGHT: 4 grams.Gemstones have not been graded for color anSee Sold Price
Sold2023Oval Natural Violet Blue Sapphire Engagement Ring Platinum DiamondOval Natural Violet Blue Sapphire Engagement Ring Platinum DiamondSee Sold Price
Sold2021Platinum Diamond Engagement RingMETAL: Platinum. GEMSTONES: Center diamond approx. 0.65ct, strong blue fluorescence VS/H , Side diamonds approx. 0.28ctw. MEASUREMENTS: Ring size 8 1/4, ring top is 8.2mm wide. MARKED: PT, Maker'sSee Sold Price
Sold2022Unmarked platinum diamond engagement ringUnmarked platinum diamond engagement ring, 60-70 pt center stone, 3 small stones on each shoulder of a filigree setting, along with an unmarked platinum eternity band set with pale blue stones, stonesSee Sold Price
Sold2017(5) 14K RINGS AND A PLATINUM SETTINGincluding a red stone ring with seed pearl, a (9x7mm) blue stone ring accented with diamonds, a 7mm pearl ring, a red round stone ring, a wedding band, and a platinum engagement ring setting accentedSee Sold Price
Sold2023Antique Estate Art Deco Filigree 1.25 Diamond French Cut Blue Sapphire Shield RingA very antique art deco shield ring with incredible quality stones and attention to detail craftsmanship. Jewelry Type: Antique shield engagement ring Materials: Platinum, natural diamond and blueSee Sold Price
Sold2020Stunning 3 Stone Sapphire & Diamond Engagement RingThis beautiful platinum 3 stone mount features a deep blue oval sapphire, weighing approximately 1 carat, exhibiting an almost tanzanite color and accented by 2 round diamonds. Each diamond is approxiSee Sold Price
Sold20245.03 Carat Radiant Cut GIA Certified Diamond Platinum Engagement Ring5.03 carat, GIA certified, rectangular Radiant shaped Diamond solitaire. GIA certificate and professional appraisal document.See Sold Price
Sold20224.03 CT Three Stone Diamond Platinum Engagement Ring. EGL CertRadiant cut diamond ring is simply breathtaking. The astonishing 3.18ct. Radiant center stone is G color VS2 clarity, certified by EGL.See Sold Price
Sold2022Tiffany Co 1.27ct Diamond Platinum Engagement Ring• Described & Photographed By: CHRIS AJP GIA / NMYSOT 34191 / Please scroll down to see ALL 14 images• Title: Tiffany Co 1.27ct E VS2 Diamond Wide Platinum Engagement Ring w/ Box Papers CertSee Sold Price
Sold2022ART DECO 1.70CT DIAMOND PLATINUM ENGAGEMENT RING c 1925 A finely crafted C1925 Art Deco PlatinumART DECO 1.70CT DIAMOND PLATINUM ENGAGEMENT RING c 1925 A finely crafted C1925 Art Deco Platinum and diamond engagement ring. Centered with one OEC (Old European Cut) diamond of K-L color and VS1-VS2See Sold Price
Sold2022ART DECO 1.70CT DIAMOND PLATINUM ENGAGEMENT RING c 1925 A finely crafted C1925 Art Deco PlatinumART DECO 1.70CT DIAMOND PLATINUM ENGAGEMENT RING c 1925 A finely crafted C1925 Art Deco Platinum and diamond engagement ring. Centered with one OEC (Old European Cut) diamond of K-L color and VS1-VS2See Sold Price
Sold2023GIA Certified 13.25 Carat Sapphire Diamond Platinum Engagement RingGIA Certified 13.25 Carat Sapphire Diamond Platinum Engagement RingSee Sold Price
Sold2024Art Deco GIA Diamond Platinum Engagement RingA very fine antique platinum, diamond engagement ring. The details of this ring are impeccable and the fishtail prongs show very minimal signs of wear for its over 100 years of age. The large center sSee Sold Price
Sold20233 Stone White and Blue Diamond Engagement Ring 18K Whit3 Stone White and Blue Diamond Engagement Ring 18K White Gold 1.45 ctw -- CENTER STONE; DIAMOND (1.00 CTW) CENTER STONE CLARITY; SI1-SI2 CENTER STONE COLOR; J-K CENTER STONE SETTING; SIDE STONE CLARITSee Sold Price
Sold2016DIAMOND & PLATINUM ENGAGEMENT RINGSet with a RBC diamond, weighing approx. 1 cts., flanked by RBC diamonds within a frame of baguette and marquise-cut diamonds, melee approx. .40 ct. TW, mounted in millegrained platinum, ca. 1955. SizSee Sold Price
2 days LeftArk Auctions IncBlue Nile Three Row Sapphire And Diamond Engagement Platinum Ring With GIA & BlueNile CertificationUS$6,000
14 hrs LeftPapps Family LiquidationDiamond and Pear Blue Sapphire Engagement Ring Platinum 1.79ctwUS$500
3 days LeftPapps Family LiquidationDiamond and Pear Blue Sapphire Engagement Ring platinum 1.79ctwUS$500
12 hrs LeftEric's Estate & JewelryCertified Diamond 3 Stone Wedding Anniversary Engagement Ring in 18k White GoldUS$3,900
3 days LeftSeized Assets AuctioneersVintage Platinum 1.48 ctw Round Sapphire Solitaire Diamond 3 Stone Engagement RiUS$1
Jun 23Modern JewelryTiffany & Co. 1.06 Carat Emerald Cut G VS1 Diamond Platinum Engagement RingUS$14,000
Jun 23Modern JewelryVintage 1.34 Carat Old European Cut H-SI1 Diamond Platinum Engagement RingUS$4,950
Jun 23Modern JewelryArt Deco 2.14 Carat Old European Cut I VS2 Diamond Platinum Engagement RingUS$25,000
Jun 23Modern JewelryTiffany & Co. 1.17 Carat Ruby 0.20 Round Diamond Platinum Engagement RingUS$13,500
Jun 23Modern JewelryTiffany & Co. 1.04 Carat Round Brilliant G VS1 Diamond Platinum Engagement RingUS$14,000
Jun 23Modern Jewelry2.00 Carat Circular Brilliant Shape N-SI2 Diamond Platinum Engagement RingUS$14,000
Jun 23Modern Jewelry2.17 Carat Old European Cut K SI2 & I VS2 Diamond Platinum Engagement RingUS$21,750