7.28 ct Australian Boulder Opal

Item: 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 that

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

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

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

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

Title: 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 $1

Item: 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 that

Item: 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: This

Item: 10.04 ct Australian Boulder Opal Gemstones: Opal Carat Weights: 10.04 Size/Dimensions: 17.9 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 col

17x13x4mm Weight: 6 Carat

12x9x6mm Weight: 7 Carat

Dimension: 15-20 mm Weight: 80 ct Estimate:$250-$450 In recent auctions, Australian Boulder Opals, especially in their rough form, have captured the fascination of many collectors. An analogous specim

Dimension: 19x13x9 mm Weight: 62.5 ct Estimate:$250-$450 In recent auctions, Australian Boulder Opals, especially in their rough form, have captured the fascination of many collectors. An analogous sp

Dimension: 18-30 mm Weight: 75.5 ct Estimate:$250-$450 In recent auctions, Australian Boulder Opals, especially in their rough form, have captured the fascination of many collectors. An analogous spec

Dimension: 13 TO 25 mm

Dimension: 17 to 24 mm

Dimension: 18 x 13 x 4 mm

Dimension: 45 x 25 mm

Dimension: 13 X 11 x 4 Cm

Dimension: 20 X 9 x 4 Cm

Dimension: 21 X 15 x4 Cm

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

Dimension: 17x9x3.6 mm Weight: 4.85 Ct Estimate: $220-$460 In recent auctions, Australian Koroit Matrix Boulder Opals have witnessed an increasing demand. An opal of similar quality and pattern was au

Dimension: 13.5x9.7x3.3 mm Weight: 3.5 Ct Estimate: $220-$460 In recent auctions, Australian Koroit Matrix Boulder Opals have witnessed an increasing demand. An opal of similar quality and pattern was