PLATINUM SEMI-MOUNT RING W/ 0.30CT H SI BAGUETTE DIAMONDS – VINTAGE SETTINGModern Jewelry4.5(203)$2,600Mar 03, 2026
TIFFANY & CO VINTAGE 3.60 GRAMS SIZE 5.25 PLATINUM SEMI MOUNT RINGModern Jewelry4.5(203)$2,250Mar 03, 2026
TIFFANY & CO SIZE 4.5 HOLDS 2.25 CARAT STONE PLATINUM SEMI MOUNT RINGModern Jewelry4.5(203)$2,70012 hrs Left
TIFFANY & CO VINTAGE 3.90 GRAMS SIZE 4.75 PLATINUM SEMI MOUNT RINGModern Jewelry4.5(203)$2,450Mar 03, 2026
PLATINUM SEMI-MOUNT RING W/ 0.30CT H SI BAGUETTE DIAMONDS – VINTAGE SETTINGModern Jewelry4.5(203)$2,60012 hrs Left
TIFFANY & CO SIZE 4.5 HOLDS 2.25 CARAT STONE PLATINUM SEMI MOUNT RINGModern Jewelry4.5(203)$2,700Mar 03, 2026
TIFFANY & CO VINTAGE 3.90 GRAMS SIZE 4.75 PLATINUM SEMI MOUNT RINGModern Jewelry4.5(203)$2,45012 hrs Left
TIFFANY & CO VINTAGE 3.60 GRAMS SIZE 5.25 PLATINUM SEMI MOUNT RINGModern Jewelry4.5(203)$2,25012 hrs Left
TIFFANY & CO VINTAGE 4.80 GRAMS SIZE 4.5 PLATINUM SEMI MOUNT RINGModern Jewelry4.5(203)$2,25012 hrs Left
TIFFANY & CO VINTAGE 9.90 GRAMS SIZE 5 PLATINUM SEMI MOUNT RINGModern Jewelry4.5(203)$2,450Mar 03, 2026
TIFFANY & CO VINTAGE 9.90 GRAMS SIZE 5 PLATINUM SEMI MOUNT RINGModern Jewelry4.5(203)$2,45012 hrs Left
TIFFANY & CO VINTAGE 4.80 GRAMS SIZE 4.5 PLATINUM SEMI MOUNT RINGModern Jewelry4.5(203)$2,250Mar 03, 2026
Vintage 1940's 2-Stone Diamond Engagement Ring Platinum, .18 CTW, 3.33 GramsChairish Auctions4.5(10.3k)$380
SoldPlatinum Engagement Ring Mounting Lot of 2METAL: platinum. MEASUREMENTS: ring size 6.25. Center of the ring will keep approx. 7.5mm round stone. Ring size 6.25. Center of the ring will keep approx. 10mm round stone. TESTED: platinum. WEIGHT:See Sold Price
SoldScott Kay Platinum Engagement Ring MountingMETAL: platinum. MEASUREMENTS: ring size 5.5. Band is 8.2mm at widest point. Center of the ring will keep stone approx. 5.5mm x 7mm. MARKED: Scott Kay Plat. WEIGHT: 13.9 grams. Gemstones have not beenSee Sold Price
SoldPlatinum Engagement Ring MountingMETAL: Platinum. MEASUREMENTS: Ring size 6 1/4, ring top is 12mm wide. Center of the ring will keep approx. 10mm in diameter stone. TESTED: Plat. WEIGHT: 5.2 grams.Gemstones have not been graded for cSee Sold Price
SoldAntique Platinum Engagement Ring MountingMETAL: platinum. MEASUREMENTS: ring size 5.75. Ring center will keep approx. 10.5mm round stone. TESTED: platinum. WEIGHT: 4.3 grams.Gemstones have not been graded for color and clarity ,and tested foSee Sold Price
SoldA Platinum Engagement Ring Mounting.A Platinum Engagement Ring Mounting. Size: 7.75 Wt: 4.1 gramsSee Sold Price
SoldPlatinum Engagement Ring MountingMETAL: Platinum. MEASUREMENTS: Ring size 4 3/4, center will fit approx. 6.5-7mm stone. TESTED: Plat. WEIGHT: 4.4 grams.Gemstones have not been graded for color and clarity ,and tested for clarity andSee Sold Price
SoldBlue Nile Platinum Engagement Ring MountingMETAL: Platinum. MEASUREMENTS: Ring size 5 3/4, center will fit approx. 10x7.5mm stone. MARKED: Maker's Logo mark, Plat. WEIGHT: 4.1 grams.Gemstones have not been graded for color and clarity ,andSee Sold Price
SoldPlatinum Engagement Ring MountingMETAL: Platinum. MEASUREMENTS: Ring size 4, center will fit approx. 7.5mm stone. MARKED: PT950. WEIGHT: 3.5 grams. Gemstones have not been graded for color and clarity ,and tested for clarity and coloSee Sold Price
SoldPlatinum 14K Diamond Engagement Ring Mounting and Band14K Gold wedding band and platinum engagement ring mounting feature approx. 0.60ctw baguette diamonds. Engagement Ring mounting will fit approx. 8mm stone. Engagement ring marked 10% IRID Plat, weddinSee Sold Price
SoldAn Assortment of Lady's Diamond & Gemstone Rings1) Platinum engagement ring mounting with side diamonds, center stone has been removed with matching platinum diamond wedding band, sz 4.5, 2) 14K yellow gold diamond solitaire engagement ring, approxSee Sold Price
SoldPlatinum Diamond Engagement Ring MountingMETAL: Platinum. GEMSTONES: Diamonds approx. 8.3mm x 7.5mm and 8.3mm x 7.5mm (depth unable to measure due to the way the stones are set). Center of the ring will keep approx. 13mm x 11mm stone. MEASURSee Sold Price
SoldPlatinum Diamond Engagement Ring MountingMETAL: Platinum. GEMSTONES: Diamonds approx 0.60-0.70ctw. Center of the ring will keep approx. - 6.2mm x 5mm stone. MEASUREMENTS: Ring size 5 3/4, ring top is 8mm at widest point. MARKED: Plat. WEIGHTSee Sold Price
SoldPlatinum Diamond Engagement Ring MountingMETAL: Platinum. GEMSTONES: Diamonds approx. 1.00ctw. Center of the ring will keep approx. 9.5mm x 8mm stone. MEASUREMENTS: Ring size 6 1/2, ring top is 12.5mm wide (ring shank is split). MARKED: PlatSee Sold Price
SoldArt Deco Platinum Diamond Engagement Ring MountingMETAL: platinum. MEASUREMENTS: ring size - 5 1/2, ring top is 12.7mm wide at widest point. Center will fit approx. 8.6mm stone. GEMSTONES: side diamonds. TESTED: plat. WEIGHT:4.5 grams.Gemstones haveSee Sold Price
SoldMichael B. Platinum Diamond Engagement Ring MountingRing features approx. 225 diamonds in the eternity shank. Center will fit approx. 8.5mm round stone or 6mm x 6mm square. Ring size 7.5. Band measures 5mm wide. Marked Michael B., 06, PT90%. Weight - 1See Sold Price
SoldPlatinum Diamond Engagement Ring MountingMETAL: platinum. MEASUREMENTS: ring size - 6 3/4, center will fit approx. 7.5mm x 7mm. GEMSTONES: two side pear shape diamonds - approx. 0.50ctw. MARKED: irid. plat. WEIGHT: 4.6 grams.Gemstones have nSee Sold Price
SoldPlatinum Diamond Engagement Ring MountingMETAL: Platinum. GEMSTONES: Diamonds approx. 1.00ctw. MEASUREMENTS: Ring size 5 1/2, center will fit approx. 9.5mm x 8.5mm stone (prongs are missing). MARKED: PT. WEIGHT: 18.4 grams.Gemstones have notSee Sold Price
SoldBlue 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
SoldArt Deco Platinum Diamond Engagement Ring MountingMETAL: PLATINUM. GEMSTONES: diamonds.MEASUREMENTS: ring size 8.75. Ring center will keep approx. 8.5mm stone. TESTED: platinum. WEIGHT: 3.6 grams. Gemstones have not been graded for color and claritySee Sold Price
SoldPlatinum Diamond Engagement Ring MountingMETAL: platinum. GEMSTONES: approx. 79 diamonds. MEASUREMENTS: ring size 7.75. Band is 10.3mm in widest point. Center of the ring will keep approx. 8mm x8mm stone. TESTED: platinum. WEIGHT: 11.2 gramsSee Sold Price
SoldMid Century Platinum Diamond Engagement Ring MountingMounting features approx. 0.26ctw of diamonds. Center will fit approx. 8.5mm round stone. One prong is bent. Ring size 7.75. Tested platinum. Weight - 7.7 grams. Gemstones have not been graded for colSee Sold Price
SoldPlatinum Diamond Engagement Ring MountingMETAL: platinum. GEMSTONES: diamonds.MEASUREMENTS: ring size 5.5. Ring center will keep approx. 4.5mm x 5.5mm stone. MARKED: QUAD, Plat 27740, 2.10. WEIGHT: 9.5 grams. Gemstones have not been graded fSee Sold Price
SoldAntique Platinum Diamond Engagement Ring MountingRing size 6 3/4 (shank is slightly bent) top of the ring is 11mm in diameter, center will fit approx. 7.4mm stone., surrounded with 32 diamonds. Tested plat. Weight - 6.1 grams.Gemstones have not beenSee Sold Price
SoldPlatinum Diamond Engagement Ring Mounting SettingMETAL: platinum. MEASUREMENTS: Ring size - 7 1/4, center will fit approx. 9mm in diameter stone. GEMSTONES: diamonds - approx. 0.30ctw . MARKED: platinum. WEIGHT: 4.4 grams.Gemstones have not been graSee Sold Price
