36 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

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 Full Fire Black Opal 5.36 Carats ....... Color :Multi-Color ;Shape :Oval Cab;Weight :5.36 Ct's ; Size (L W H) :15.16 x 10.65 x 7.15 mm;Treatment :heated/treated ;Hardness :6.5 Moh's Scale;Orig

Mineral :Natural Australian Boulder Opal Dimensions:36×33×7 mm Weight:13.73Cts Origin (Region/ City):Yowah, Queensland Origin (Country):Australia The Yowah opal field located in Queensland Australia

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

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

No Reserve! Title: 4.36 Ctw Natural Ethiopian Black Fire Opal Oval Cut Stone Clarity: Translucent Gemstones: Black Opal Carat Weights: 4.36 Size/Dimensions: 15.90 x 11.40 x 5.10 mm Additional Informat

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: 2.36 Ctw Natural Ethiopian Black Fire Opal Pear Cab Stone Clarity: Translucent Gemstone: Black Opal Carat Weights: 2.36 Size/ Dimensions: 13.40 x 8.70 x 5.30 mm Additional Info: Exc

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

No Reserve! Title: 3.36 Ctw Natural Ethiopian Black Fire Opal Oval Cab Stone Clarity: Translucent Gemstones: Natural Black Opal Carat Weights: 3.36 Size/Dimensions: 14.90 x 9.60 x 5.00 mm Additional I

No Reserve! Title: 1.36 Ct Natural Ethiopian Black Fire Opal Oval Cab Stone Clarity: Translucent Gemstones: Natural Black Opal Carat Weights: 1.36 Size/Dimensions: 9.00 x 7.00 x 4.10 mm Additional Inf