Alberto Fidalgo

Coloured Gemstones Auction

ALGT Colored Stone Identification Report n. 14522749 (24 September, 2026)
Natural Opal
Crystal Opal
Pear Shape, Cabochon Cut
Ct. 4.27
16.58 x 10.96 x 6.38
White + Play of Colors (Intense)
Translucent
Opaliscence
No Indications of Treatment

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1 pcs  White, Multicolour Opal  - 4.27 ct - Antwerp Laboratory for Gemstone Testing (ALGT) - Intense Play of Colors

No evidence of treatment-  Lab report: 14522749

Italy

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Private collector. Offers selected colored gems.

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Natural opal, pear cabochon cut, 4.27 ct, white with intense play of colors and opalescence, translucent, no evidence of treatment; ALGT report no. 14522749.

1 pcs White, Multicolour Opal - 4.27 ct - Antwerp Laboratory for Gemstone Testing (ALGT) - Intense Play of Colors

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Natural opal, pear cabochon cut, 4.27 ct, white with intense play of colors and opalescence, translucent, no evidence of treatment; ALGT report no. 14522749.

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