1 pcs White Opal - 8.66 ct - Antwerp Laboratory for Gemstone Testing (ALGT)
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A single white opal gem weighing 8.66 carats, pear cabochon with play of colour and opaque translucency, with no evidence of treatment and identified by Antwerp Laboratory for Gemstone Testing (ALGT) report 17230096.
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Description from the seller
ALGT COLORED STONE IDENTIFICATION REPORT
IDENTIFICATION
Species .............................................................................................................. Natural Opal
Variety .................................................................................................................. White Opal
DESCRIPTION
Shape & Cutting Style ......................................................................... Pear, Cabochon
Measurements .................................................................... 17.20 x 12.81 x 8.57 mm
Carat Weight ...................................................................................................... 8.66 Carat
Color ........................................................................... White + Play of Colors (Intense)
Transparency ........................................................................................................... Opaque
ADDITIONAL GRADING CHARACTERISTICS
Optical Effect .................................................................................................. Opaliscence
COMMENTS
No indications of treatment.
16 January, 2026
17230096
ALGT COLORED STONE IDENTIFICATION REPORT
IDENTIFICATION
Species .............................................................................................................. Natural Opal
Variety .................................................................................................................. White Opal
DESCRIPTION
Shape & Cutting Style ......................................................................... Pear, Cabochon
Measurements .................................................................... 17.20 x 12.81 x 8.57 mm
Carat Weight ...................................................................................................... 8.66 Carat
Color ........................................................................... White + Play of Colors (Intense)
Transparency ........................................................................................................... Opaque
ADDITIONAL GRADING CHARACTERISTICS
Optical Effect .................................................................................................. Opaliscence
COMMENTS
No indications of treatment.
16 January, 2026
17230096
Details
Nr of stones
1
Lab report number
17230096
Gemstone type
Opal
Total carat weight
8.66
Gemstone colour
White
Optical effect
Play of colour
Transparency
Opaque
Treatment
No evidence of treatment
Laboratory Report
Antwerp Laboratory for Gemstone Testing (ALGT)
Sealed by laboratory
No
Shape
Pear
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