Rocks, Minerals & Fossils

BOULDER OPAL 56.00 CT mwf2283 First Image

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BOULDER OPAL 56.00 CT mwf2283 First Image

BOULDER OPAL 56.00 CT mwf2283

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Boulder Opal 1.55 ct (1 of 1)

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Natural Multi Color Boulder Opal 19.86 Ct. Butterfly Carving 31 x 20 Mm. Gemstone From Australia (1 of 3)

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Natural Multi Color Flashing Boulder Opal 31.58 Ct. Free Form Cabochon Shape 37 x 23 Mm. Gemstone (1 of 3)

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Multi Color Flashing Boulder Opal 19.53 Ct. Free Form Cabochon 26 x 21 Mm. Natural Gemstone (1 of 3)

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Natural Multi Color Flashing Boulder Opal 14.06 Ct. Free Form Cabochon Shape Gemstone From Australia (1 of 3)

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Natural Multi Color Flashing Boulder Opal 1.35 Ct. Gemstone Free Form Cabochon (1 of 3)

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Natural Multi Color Flashing Boulder Opal 7.20 Ct. Gemstone Unheated From Australia (1 of 3)

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Natural Multi Color Flashing Boulder Opal 10.60 Ct. Free Form Cabochon Shape 22 x 11.4 Mm. Gemstone (1 of 3)

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Multi Color Flashing Boulder Opal 1.35 Ct. Natural Gemstone Free Form Cabochon (1 of 3)

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Natural Rainbow Matrix Boulder Opal 2.17 Ct. Free Form Cabochon Shape 9.6 x 8.8 Mm Gemstone From (1 of 1)

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Natural Multi Color Flashing Boulder Opal 8.60 Ct. Free Form Cabochon Shape Gemstone From Australia (1 of 3)

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Matrix Boulder Opal 14.10 Ct. Oval Cabochon Shape 17.3 x 13.6 Mm. Natural Gemstone Unheated (1 of 3)

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Natural Multi Color Flashing Boulder Opal 3.22 Ct. Free Form Cabochon Gemstone From Australia (1 of 3)

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Natural Multi Color Matrix Boulder Opal 1.94 Ct. Free Form Cabochon Shape 8.7 x 7.4 Mm Gemstone From (1 of 3)

Natural Multi Color Matrix Boulder Opal 1.94 Ct. Free Form Cabochon Shape 8.7 x 7.4 Mm Gemstone From Product ID: 818720275 Product Name: Natural Opal Weight: 1.94 CT. Size: 8.7 x 7.4 x 3.9 MM. Shape: Free Form Cabochon Color: Multi Color Clarity:Opaque Luster: Iridescent Gems Origin: Australia Treatm

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Loose rough boulder opal, approx. 198.34 ct (1 of 1)

Loose rough boulder opal, approx. 198.34 ct

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12.76 ct boulder opal (1 of 8)

12.76 ct boulder opal Title: 12.76 ct boulder opal Color/Clarity: matrix opal Gemstone Type: natural/unheated Carat Weights: 12.76 Size/Dimensions: 24.42 X 16.34 X 6.19 MM Additional Information: Australia Reserve: $55.00

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22.92 ct Australian Boulder Opal Gemstone Cabochon (1 of 4)

22.92 ct Australian Boulder Opal Gemstone Cabochon 22.92 ct Boulder Opal cabochon. 28 x 18mm. Queensland Australia origin gemstone. Perfect shape & size for a lovely pendant.

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Australian koroit boulder opal-33.65 ct. (1 of 2)

Australian koroit boulder opal-33.65 ct.Australian koroit boulder opal-33.65 ct. Reserve: $50.00 Shipping: Domestic: Flat-rate of $10.00 to anywhere within the contiguous U.S. International: Foreign shipping rates are determined by destinat

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5.92 ct Australian Boulder Opal (1 of 4)

5.92 ct Australian Boulder Opal Item: 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 adva

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10.74 ct Australian Boulder Opal (1 of 3)

10.74 ct Australian Boulder Opal Title: 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 a

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10.45 ct Australian Boulder Opal (1 of 4)

10.45 ct Australian Boulder Opal Title: 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 starts

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70.44 ct Natural Boulder Opal (1 of 2)

70.44 ct Natural Boulder Opal No Reserve! Title: 70.44 ct Natural Boulder Opal Color/Clarity: Opaque Gemstones: Gemstones Carat Weights: 70.44 Size/Dimensions: 45.05 x 30.45 x 6.00 Additional Information: Oval - Australia Shipping

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9.81 ct Australian Boulder Opal (1 of 4)

9.81 ct Australian Boulder Opal Item: 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 collect

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