Art Deco 25.75ct Star Sapphire Diamond Dome RingArt Deco 25.75 Carats Star Sapphire & Diamond Platinum Dome Ring Size 4 This is a stunning Art Deco ring, it is crafted from platinum featuring a high dome shape star sapphire mounted on a round frameSee Sold Price
Sold900PT 2.32CT STAR SAPPHIRE DIAMOND RING, 8.5.A 900-purity platinum 2.32-carat cabochon cut star sapphire ring accented by a halo of round brilliant cut and tapered baguette diamonds totaling 0.27 carats. Stamped 027, Pt900, S232, K74367, on theSee Sold Price
SoldSapphire, Diamond and Platinum RingApprox. 70.0 Carat Star Sapphire, Round Cut Diamond and Platinum Ring. Sapphire measures 22.5mm. Diamonds F-G color, VS-SI clarity. Ring size 5 (with sizing balls). Approx. weight: 28.30 grams. ConditSee Sold Price
Sold900PT 8.82 CTTW STAR SAPPHIRE & DIAMOND HALO RINGA gorgeous 900 platinum ring having an 8.08-carat cabochon-cut star sapphire center stone surrounded by a sparkling halo of 0.74-carats of diamonds. Stamped 900pt, 8.08, 0.74. Details and measurementsSee Sold Price
SoldPLAT 2.35CTTW STAR SAPPHIRE & DIAMOND HALO RING900-purity platinum ring with a 2.00-carat cabochon-cut star sapphire accented by a halo of round brilliant and tapered baguette diamonds. Stamped Pt900, S2.00, D0.35, on the inside of the ring band.See Sold Price
SoldMen's Mid Century Platinum, Star Sapphire & Diamond Ringsize 13 ring; the blue-gray star sapphire measures 21 x18 x13.9 mm with an estimated weight of 58 carats; sapphire displays natural color zoning and cracks are present in the crown and pavilion side wSee Sold Price
SoldAntique Platinum, Star Sapphire, and Diamond RingAntique Platinum, Star Sapphire, and Diamond RingSee Sold Price
SoldPlatinum, Star Sapphire, and Diamond RingPlatinum, Star Sapphire, and Diamond Ringthe round cabochon star sapphire (13.62 x 12.16 x 7.20 mm) weighing approximately 12.83 carats prong set within a halo set with full cut round diamonds weighinSee Sold Price
SoldPlatinum Purple Star Sapphire & Diamond RingDESCRIPTION: Platinum (stamped PT900) setting with center purple star sapphire cabochon, approximately 4.2 carats (9.7mm x 8.6mm x 4.7mm) surrounded by ten round brilliant cut diamonds and eight channSee Sold Price
SoldART DECO PLATINUM, DIAMOND, & STAR SAPPHIRE RINGcentering one round cabochon cut star sapphire weighing approximately 5.8 carats; and 35 early round full cut, single cut, and Swiss cut diamonds [G-H/VS2-SI1] weighing approximately 0.90 carats totalSee Sold Price
SoldPlatinum Diamond Star Sapphire Dome RingMetal Content: Platinum.Weight of Item: 18.8 grams.Size: Ring size 6 3/4, ring top - 23mm at widest poin.Gemstone: Diamonds. Star sapphire approx. 19.53ct (15.5mm x 13.5mm).Carat Weight: approx. 1.21cSee Sold Price
SoldPlatinum Diamond Purple Star Sapphire RingMetal Content: Platinum.Weight of Item: 8.4 grams.Size: Ring size 6 3/4, ring top - 16mm x 15.5mm.Gemstone: Diamonds. Purple Star Supphire 4.00ct (small imperfection on the side of the gem).Carat WeigSee Sold Price
Sold1.93 Carat Purple Star Sapphire Cabochon Platinum RingItem Details: Metal Type: Platinum, Weight: 5.6 grams, Ring Size: 6.75 (easily resizable). Features: Accent Diamonds: Baguette Cut, .29 Carats Total (2 stones), F Color, VS Clarity, Star Sapphire CaboSee Sold Price
Sold900PT 18.758CTTW STAR SAPPHIRE & DIA. RING, 7.75900-purity platinum ring with an 18.618-carat cabochon-cut star sapphire center stone accented by 0.14 carats of round brilliant diamonds. Stamped D0.14, Pt900, 18.618, on the inside of the ring band.See Sold Price
SoldPLAT. 4.6CTTW STAR SAP. & DIA. HALO RING, 8.75Platinum ring with a 4.25-carat cabochon-cut star sapphire accented by a halo of round brilliant and tapered baguette diamonds totaling 0.329 carats. Stamped 4.25, Pt900, 0329, on the inside of the riSee Sold Price
SoldPlatinum Star Sapphire RingA fine six point star oval cabochon gem weighing 17.36 carats with baguette diamonds on each side totaling .25 carat, high grade, a scarce large gem, Art Deco era, with appraisal of $10,550.00, currenSee Sold Price
SoldVINTAGE PLATINUM, STAR SAPPHIRE & DIAMOND RINGVintage ladies platinum, star sapphire and diamond estate ring; (1) natural star sapphire corundum, oval cabochon-cut, weighing approx 24.63cts, tone: medium dark, saturation: grayish, hue: blue, theSee Sold Price
SoldArt Deco Platinum Star Sapphire & Diamond RingArt Deco Platinum 10.79ct. Blue Star Sapphire & 0.86ct. Diamond Ladies Ring. Size approx. - 4 - 4 1/2. Star sapphire - 12mm x 9mm x 9.25mm, weighing approx. 10.79ct. Sapphire is of slightly violetSee Sold Price
SoldPlatinum Star Sapphire & Diamond Ring 8.19ctw, 7.03 Grams Jewelry Diamonds Gemstonessize: 4, weight: 7 grams, material: platinum, gemstone: natural star sapphire, 7.56ct, diamond: 0.63ctw, VS-SI clarity, G-I colorSee Sold Price
SoldPlatinum Star Sapphire Cabochon Diamond RingPlatinum ring, with center 11.3 x 9.7 x 9.5mm star sapphire cabochon, surrounded with approx. 0.12ctw in diamonds. Ring size - 5.5, ring top - 12mm wide. Weight - 7.3 grams.See Sold Price
Sold1950s Platinum Star Sapphire Diamond Cocktail RingStar sapphire measures 12.5mm x 10.3mm. Ring size 4. Marked Plat, weighs 8.4 grams.Gemstones have not been graded for color and clarity ,and tested for clarity and color enhancement, unless stated othSee Sold Price
SoldPlatinum, Unheated Star Sapphire & Diamond Ring 9.37ctw, 10 Grams Jewelry Gemstone Natural Diamondssize: 4.5, weight: 10 grams, material: platinum, gemstone: natural unheated star sapphire: 9.26ctw, diamonds: G-H SI clarity 0.11ctwSee Sold Price
SoldPlatinum 2.71ctw Star Sapphire & Diamond RingPlatinum 900 2.71ctw Star Sapphire & Diamond Ring. 2.49ct star sapphire cabochon. .22ct diamond halo. Very nice diamonds. 5.7 grams.See Sold Price
SoldPlatinum 9.0 Carat Blue Sapphire & Diamond RingPlatinum ring with a 9.0 carat natural Blue Sapphire cushion step cut center gemstone and 48 round brilliant and baguette diamonds with a total weight of 2.68 carats. The heat treated Blue Sapphire isSee Sold Price
Star Sapphire 13.72ct Diamond 0.65ct Ballerina Platinum Ring 11.7 gramsDover Jewelry4.3(8)$950(2 bids)18 hrs Left
Antique GIA Certified Ceylon Blue Star Sapphire Diamond Ring in PlatinumBidhaus4.3(790)$10Jul 23, 2025
Vintage Art Deco Platinum Ring 35.45 Ct Star Sapphire 1.25 Ct Diamonds Size 5Bidhaus4.3(790)$102 days Left
Vintage Art Deco Platinum 15.00 Ct Star Sapphire Diamond RingMynt Auctions4.6(735)$10(1 bid)Jul 23, 2025
Platinum Setting with 5.91ct Star Sapphire and 0.56ct Diamond Ladies RingRiverside Galleries4.5(187)$507 days Left
Platinum Setting with 3.17ct Star Sapphire and 0.21ct Diamond Ladies RingRiverside Galleries4.5(187)$507 days Left
Platinum Setting with 14.39ct Star Sapphire and 0.37ct Diamond Ladies RingRiverside Galleries4.5(187)$507 days Left
Platinum Setting with 20.96ct Star Sapphire and 1.37ct Diamond Ladies RingRiverside Galleries4.5(187)$507 days Left
ESTATE 11 CARATS STAR SAPPHIRE DIAMOND OVAL HALO 14K GOLD RING SIZE -7Modern Jewelry4.5(192)$2,700Aug 31, 2025
Platinum Setting with 14.39ct Star Sapphire and 0.37ct Diamond Ladies RingRiverside Galleries4.5(187)$50Jul 24, 2025
Platinum Setting with 5.91ct Star Sapphire and 0.56ct Diamond Ladies RingRiverside Galleries4.5(187)$50Jul 24, 2025
Platinum Setting with 20.96ct Star Sapphire and 1.37ct Diamond Ladies RingRiverside Galleries4.5(187)$50Jul 24, 2025
Platinum Setting with 3.17ct Star Sapphire and 0.21ct Diamond Ladies RingRiverside Galleries4.5(187)$50Jul 24, 2025
