Ends in 2d 11hGRS Certified Faceted Bi Color Sapphire: 21.37 Carat Cushion Cut GemstoneEst. $54,000-$65,000$22,000Chairish AuctionsNew York, NY
5 hrs LeftNatural Clean Bi Color Tourmaline Gemstones 5.87 Ct. Octagon Shape 13.1 x 7.9 Mm.Est. $2,862-$4,497$1Treasure of Gems & JewelryLake Charles, LA
5 hrs LeftNatural Bi Color Tourmaline Gemstones 2.74 Ct. Octagon Shape 9.9 x 6 Mm.Est. $1,345-$2,114$1Treasure of Gems & JewelryLake Charles, LA
5 hrs LeftNatural Bi Color Tourmaline Gemstones 4.93 Ct. VVS Cushion Shape 10 x 9.6 Mm.Est. $4,002-$6,290$1Treasure of Gems & JewelryLake Charles, LA
Buy NowGRS Certified Faceted Bi Color Sapphire: 21.37 Carat Cushion Cut Gemstone$45,000Chairish AuctionsNew York, NY
May 24, 2026Natural Bi Color Tourmaline Gemstones 23.61 Ct. Clean Octagon 14.8 x 13.7 Mm.Est. $30,170-$47,410$1Treasure of Gems & JewelryLake Charles, LA
5 hrs LeftNatural Bi Color Tourmaline Gemstones 5.74 Ct. Octagon 2.5 x 5.2 Mm.Est. $1,872-$2,942$1Treasure of Gems & JewelryLake Charles, LA
Buy NowGRS Certified Faceted Bi Color Sapphire: 21.37 Carat Cushion Cut Gemstone$45,000Chairish AuctionsNew York, NY
5 days LeftLot of Tri-color & Bi-Color Gemstones in Various Cuts / Sizes - From Jeweler EstateEst. $500-$800$75A & A Auction GallerySanta Cruz, CA
May 17, 2026Natural Bi Color Tourmaline Gemstones 13.00 Ct. VVS Octagon Shape 21 x 18 Mm.Est. $10,475-$16,461$1Treasure of Gems & JewelryLake Charles, LA
May 17, 2026Natural Bi Color Tourmaline Gemstones 16.80 Ct. Octagon 17.7 x 10 Mm.Est. $8,175-$12,847$1Treasure of Gems & JewelryLake Charles, LA
5 hrs LeftNatural Bi Color Tourmaline Gemstones 2.73 Ct. VS Octagon 8.2 x 7.2 Mm.Est. $664-$1,044$1Treasure of Gems & JewelryLake Charles, LA
5 hrs LeftNatural Bi Color Tourmaline Gemstones 3.32 Ct. Octagon Shape 12.9 x 5.8 Mm.Est. $498-$783$1Treasure of Gems & JewelryLake Charles, LA
5 hrs LeftNatural Bi - Color Tourmaline Gemstones 3.11 Ct. Octagon 11.3 x 6.1 Mm.Est. $469-$737$1Treasure of Gems & JewelryLake Charles, LA
5 hrs LeftNatural Bi Color Tourmaline Gemstones 0.92 Ct. Octagon Shape 5.9 x 4.6 Mm.Est. $135-$213$1Treasure of Gems & JewelryLake Charles, LA
5 hrs LeftNatural Bi Color Tourmaline Gemstones 1.71 Ct. Octagon Shape 7.5 x 5.6 Mm.Est. $256-$403$1Treasure of Gems & JewelryLake Charles, LA
5 hrs LeftNatural Bi Color Ametrine Gemstones 2.88 Ct. Baguette Shape 8.2 x 8.1 Mm.Est. $175-$275$1Treasure of Gems & JewelryLake Charles, LA
2 days Left3.35 Carats Very Fine Quality Paired Bi Color Natural Tourmaline Gemstones - 12X4X3 mmEst. $210-$220$180Fantasy JewelryMuscat, AE
Ends in 2d 12h4.95 Carat Bi-Color Tourmaline Gemstone: Emerald Cut Blue Green JewelEst. $900-$1,100$380Chairish AuctionsNew York, NY
Ends in 2d 11hBi Color Ametrine Gemstone, Natural Ametrine Stone For jewelry : 27.60 CTEst. $400-$500$160Chairish AuctionsNew York, NY
5 hrs LeftNatural Bi Color Ametrine Gemstones 4.21 Ct. Octagon Shape 11.2 x 8.5 Mm.Est. $177-$279$1Treasure of Gems & JewelryLake Charles, LA
2 days Left3.05 Carats Natural Bi Color Pink Sapphire Gemstone - 11X8X4.5 mmEst. $800-$900$520Fantasy JewelryMuscat, AE
May 17, 2026Natural Bi Color Tourmaline Gemstones 4.57 Ct. Octagon Shape 8.7 x 7.6 Mm.Est. $2,230-$3,504$1Treasure of Gems & JewelryLake Charles, LA
5 hrs LeftNatural Bi Color Tourmaline Gemstones 1.45 Ct. Octagon Shape 7.5 x 4.7 Mm.Est. $337-$530$1Treasure of Gems & JewelryLake Charles, LA