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13 carats in a round cut — heat-treated
Archive Reference: JW0442
GIA-certified (report 2223341553)
SKU: S0117
67 carats in a round cut — unheated
0.8ct Oval Cabochon Gray Opal from Australia Displaying Asterism 13 carats in a roundA white opal of 0. 80 carats in an oval cut unheated, from Australia, with some inclusions you can see. Opal's play of colour comes from microscopic silica spheres splitting light into flashes of colour. Gem Details Gem Type: Opal Number of stones: 1 Weight: 0. 8 cts Measurements: 8. 14 6. 11 2. 31 mm Shape: Oval Cutting Style: Cabochon Transparency: Translucent Clarity: N A Colour: Gray Hue: Gray Tone: 5 Medium Species: Opal Treatment: None Origin: