Sold202217ct Koroit Australia Boulder Opal Gemstone17ct Australian Boulder Opal gemstone. ( 20x15x6mm ) Koroit opal fields, Queensland Australia origin stone. All natural, solid, untreated opal gemstone with a fantastic pattern. Very well polished onSee Sold Price
Sold2021Rare Large Size Opal Gem StoneCollectible large nature form boulder opal gemstone slab, GLA (Geometrical Laboratory of America) certificate. 2.9inch L, 1.1inch W.See Sold Price
Sold20185.92 ct Australian Boulder OpalItem: 5.92 ct Australian Boulder Opal Gemstones: Opal Carat Weights: 5.92 Size/Dimensions: 17.5 mm x 12.4 mm x 4.0 mm Please note that this lot has a confidential reserve. When you leave a bid in advaSee Sold Price
Sold201810.74 ct Australian Boulder OpalTitle: 10.74 ct Australian Boulder Opal Gemstones: Boulder Opal Carat Weights: 10.74 Size/Dimensions: 26 mm x 12 mm x 4.5 mm Additional Information: Koroit Opal Fields Please note that this lot has aSee Sold Price
Sold201810.45 ct Australian Boulder OpalTitle: 10.45 ct Australian Boulder Opal Gemstones: Boulder Opal Carat Weights: 10.45 Size/Dimensions: 30.4 mm x 10.0 mm x 4.2 mm Additional Information: Koroit Opal Fields No Reserve: This lot startsSee Sold Price
Sold20189.81 ct Australian Boulder OpalItem: 9.81 ct Australian Boulder Opal Gemstones: Opal Carat Weights: 9.81 Size/Dimensions: 16.7 mm x 15.2 mm x 4.2 mm No Reserve: This lot starts at $1 and has no reserve as a courtesy so that collectSee Sold Price
Sold201822.9 ct Australian Boulder OpalTitle: 22.9 ct Australian Boulder Opal Gemstones: Boulder Opal Carat Weights: 22.9 Size/Dimensions: 30 mm x 14 mm x 6.6 mm Additional Information: Koroit Opal Fields No Reserve: This lot starts at $1See Sold Price
Sold2018Australian Boulder OpalReserve Reduced! Title: Australian Boulder Opal Gemstones: Boulder Opal Carat Weights: 12.3 Size/Dimensions: 33 mm x 10 mm x 3.6 mm Additional Information: Australian Koroit Opal Fields Reserve: $25.0See Sold Price
Sold201810.04Â ct Australian Boulder OpalItem: 10.04Â ct Australian Boulder Opal Gemstones: Opal Carat Weights: 10.04 Size/Dimensions: 17.9Â mm x 15.6 mm x 4.9 mm No Reserve: This lot starts at $1 and has no reserve as a courtesy so that colSee Sold Price
Sold20187.82 Australian Boulder OpalItem: 7.82 Australian Boulder Opal Gemstones: Boulder Opal Carat Weights: 7.82 Size/Dimensions: 16.2 mm x 13.1 mm x 4.8 mm No Reserve: This lot starts at $1 and has no reserve as a courtesy so that coSee Sold Price
Sold2018Australian Boulder OpalReserve Reduced! Title: Australian Boulder Opal Gemstones: Boulder Opal Carat Weights: 7.2 Size/Dimensions: 16.3 mm x 10.6 mm x 5.1 mm Additional Information: Australian Koroit Opal Fields Reserve: $1See Sold Price
Sold2018Australian Boulder OpalReserve Reduced! Title: Australian Boulder Opal Gemstones: Boulder Opal Carat Weights: 4.3 Size/Dimensions: 17.7 mm x 12 mm x 3.1 mm Additional Information: Australian Koroit Opal Fields Reserve: $10.See Sold Price
Sold2018Koroit Boulder OpalItem: Koroit Boulder Opal Gemstones: Boulder Opal Carat Weights: 1.68 Size/Dimensions: 9 mm x 7 mm x 2.7 mm Additional Information: Koroit Opal Fields No Reserve: This lot starts at $1 and has no reseSee Sold Price
Sold20183.55 ct Australian Boulder OpalItem: 3.55 ct Australian Boulder Opal Gemstones: Boulder Opal Carat Weights: 3.55 Size/Dimensions: 12.2 mm x 10.8 mm x 3.5 mm No Reserve: This lot starts at $1 and has no reserve as a courtesy so thatSee Sold Price
Sold201853.88 Australian Boulder OpalItem: 53.88 Australian Boulder Opal Gemstones: Boulder Opal Carat Weights: 53.88 Size/Dimensions: 38 mm x 25 mm x 8 mm No Reserve: This lot starts at $1 and has no reserve as a courtesy so that collecSee Sold Price
Sold2018Koroit Boulder OpalItem: Koroit Boulder Opal Gemstones: Boulder Opal Carat Weights: 1.92 Size/Dimensions: 9.4 mm x 8.5 mm x 3.6 mm Additional Information: Koroit Opal Fields No Reserve: This lot starts at $1 and has noSee Sold Price
Sold20187.28 ct Australian Boulder OpalItem: 7.28 ct Australian Boulder Opal Gemstones: Boulder Opal Carat Weights: 7.28 Size/Dimensions: 14.5 mm x 9.5 mm x 5.0 mm No Reserve: This lot starts at $1 and has no reserve as a courtesy so thatSee Sold Price
Sold201826.03 ct Australian Boulder OpalItem: 26.03 ct Australian Boulder Opal Gemstones: Boulder Opal Carat Weights: 26.03 Size/Dimensions: 23.1 mm x 20.9 mm x 7.2 mm Additional Information: Australian Koroit Boulder Opal No Reserve: ThisSee Sold Price
Sold2018Australian Boulder OpalItem: Australian Boulder Opal Gemstones: Boulder Opal Carat Weights: 1.2 Size/Dimensions: 8 mm x 6.1 mm x 2.8 mm Additional Information: Koroit Opal Fields No Reserve: This lot starts at $1 and has noSee Sold Price
Sold201610.87ct NATURAL LOOSE BOULDER OPAL LOOSE GEMSTONELoose Natural Boulder opalCondition NewStone Boulder opalStone Weight 10.87ct twColor Multi colorComment Beautiful StoneSee Sold Price
Sold20166.69ct NATURAL LOOSE BOULDER OPAL LOOSE GEMSTONELoose Natural Boulder opalCondition NewStone Boulder opalStone Weight 6.69ct twColor Multi colorSee Sold Price
Sold201618.95ct NATURAL LOOSE BOULDER OPAL LOOSE GEMSTONELoose Natural Boulder opalCondition NewStone Boulder opalStone Weight 18.95ct twColor Multi colorComment Beautiful StoneSee Sold Price
Sold20168.40ct NATURAL LOOSE BOULDER OPAL LOOSE GEMSTONELoose Natural Boulder opalCondition NewStone Boulder opalStone Weight 8.40ct twColor Multi colorComment Beautiful StoneSee Sold Price
Sold20164.62ct NATURAL LOOSE BOULDER OPAL LOOSE GEMSTONELoose Natural Boulder opalCondition NewStone Boulder opalStone Weight 4.62ct twColor Multi colorComment Beautiful StoneSee Sold Price
6 days LeftHannam's Auctioneers LtdA collection of silver gemstone rings including Boulder Opal. 38 grams. O to S. (qty)£10
May 24Treasure of Gems & JewelryNatural Multi-Color Flashing Boulder Opal 24.17 Ct. Free Form Cabochon GemstoneUS$1
May 24Treasure of Gems & JewelryNatural Unheated Multi Color Swan Opal Boulder Carving 21.67 Ct. Gemstone From AustraliaUS$1
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2 days LeftTreasure of Gems & JewelryNatural Multi Color Flashing Boulder Opal 31.58 Ct. Free Form Cabochon Shape 37 x 23 Mm. GemstoneUS$1
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1 day LeftThousand Planet Auction HouseGroup of 9 Australian Winton Matrix Boulder Opal CabochonsUS$10
3 days LeftThousand Planet Auction HouseLot of 3 Exquisite Boulder Opals from Winton Mine, Queensland, AustraliaUS$5