29 Carats of Australian Black Boulder Opal

3.06 grams or 15.3 carats. 1/2" by 5/8".

Total carat weight of 21.7

Total carat weight of 28.55

Total carat weight of 23.5

2.44 grams or 12 carats. Meausres 3/4" by 1/2" by 1/4"

Total carat weight of 23.35

Title: 26.98 ct natural Lightning Ridge Australian black opal Color/Clarity: opaque Gemstone Type: natural/untreated Carat Weights: 26.98 Size/Dimensions: 29.20 x 23.73 x 5.18 MM Origin: Australia Res

Title: Lightning Ridge Australian Black Opal Certified - 1.28 ct Brand: None Metal Purity: Natural, Certified Gemstones: Australian Opal Carat Weights: 1.28 ct Size/Dimensions: 9.63 x 7.29 x 2.86 mm A

Item: Australian Black Opal - Lightning Ridge Loose Gemstone: Black Opal Carat Weight: 1.2 Size/Dimensions: 10 mm x 6 mm x 3.8 mm Shape: Freeform  / Origin: Lighting Ridge, Australia / Treatment: No

Item: NO RESERVE Australian Boulder Opal Loose Gemstone: Boulder Opal Carat Weight: 1.19 Size/Dimensions: 8.1 mm x 6.5 mm x 2.5 mm Shape: Oval  / Origin: Koroit Opal Fields, Australia / Treatment: N

Item: NO RESERVE Australian Boulder Opal Loose Gemstone: Boulder Opal Carat Weight: 2.34 Size/Dimensions: 10.4 mm x 8.2 mm x 3.9 mm Shape: Oval / Origin: Koroit Opal Fields, Australia / Treatment: Non

DIMENSIONS APPROX 7x3x5CM. Please carefully study all photographs to get an accurate idea of the object. In good condition, as seen. Shipping is in-house and we ship internationally to US and rest of

Item: Australian Lighting Ridge Black Opal Loose Gemstone: Opal Carat Weight: 3.08 Dimensions: 15.5 mm x 12.5 mm x 3.5 mm Shape: Triangle Shipping: Domestic: Flat-rate of $4.00 to anywhere within the

Item: Australian Lighting Ridge Black Opal Loose Gemstone: Black Opal Carat Weight: 3.02 Origin: Lightning Ridge, Australia Please note that this lot has a confidential reserve. When you leave a bid i

Item: Australian Lighting Ridge Black Opal Loose Gemstone: Black Opal Carat Weight: 0.9 Size/Dimensions: 7.1 mm x 6.1 mm x 3.4 mm Origin: Lightning Ridge, Australia Please note that this lot has a con

Natural Ethopian Black Opal 10.29 Carats.........size - 21x 13 x 8 mm; Origin Ethopia; image taken with torch light

Natural Ethopian Black Opal 5.29 Carats.....size 16 x 12 x 5 MM..completely untreated.....Origin - Ethopia

Title: 29.85 Ct Natural 50 Drilled Black Fire Opal Ball Beads Stone Clarity: Translucent Gemstones: Natural Black Opal Beads Carat Weights: 29.85 Size/Dimensions: 4.50 to 6.10 mm / 50 PC's Additional

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: Australian Black Opal Gemstones: Opa; Carat Weights: 1.9 Size/Dimensions: 11.1 mm x 8.0 mm x 3.2 mm Additional Information: Sugar Treated Reserve: $55.00 Shipping: Domestic: Flat-rate of $5.00

No Reserve! Title: 1.29 Ct Genuine Ethiopian Black Opal 9.5X6.7 mm Oval Stone Clarity: Translucent Gemstones: Natural Black Opal Carat Weights: 1.29 Size/Dimensions: 9.50 x 6.70 x 4.20 mm Additional I

Title: Australian Black Opal Gemstones: Opal Carat Weights: 1.2 Size/Dimensions: 11.0 mm x 7.0 mm x 2.2 mm Additional Information: Sugar Treated Reserve: $50.00 Shipping: Domestic: Flat-rate of $5.00

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

No Reserve! Title: 2.29 Ct Natural Ethiopian Black Fire Opal Pear Cab Stone Clarity: Translucent Gemstones: Natural Black Opal Carat Weights: 2.29 Size/Dimensions: 11.80 x 8.50 x 5.40 mm Additional In