1 pcs White Opal - 11.56 ct - Antwerp Laboratory for Gemstone Testing (ALGT)
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Natural Opal, 1 stone, 11.56 carat, white with vivid play of colour, translucent, pear shape with a mixed cut, no evidence of treatment, ALGT report from Antwerp Laboratory for Gemstone Testing.
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Description from the seller
ALGT COLORED STONE IDENTIFICATION REPORT
IDENTIFICATION
Species .............................................................................................................. Natural Opal
Variety ............................................................................................................... Crystal Opal
DESCRIPTION
Shape & Cutting Style ..................................................... Modified Pear, Mixed Cut
Measurements .................................................................... 19.85 x 16.26 x 9.12 mm
Carat Weight ................................................................................................... 11.56 Carat
Color ........................................................ White (Yellowish) + Play of Colors (Vivid)
Transparency ................................................................................................... Translucent
ADDITIONAL GRADING CHARACTERISTICS
Optical Effect .................................................................................................. Opaliscence
Origin .......................................................................................................................... Ethiopia
Origin determination is an expert opinion based on microscopic examination, spectroscopic features and
chemical trace element analysis.
COMMENTS
No indications of treatment.
20 July, 2025
33768564
ALGT COLORED STONE IDENTIFICATION REPORT
IDENTIFICATION
Species .............................................................................................................. Natural Opal
Variety ............................................................................................................... Crystal Opal
DESCRIPTION
Shape & Cutting Style ..................................................... Modified Pear, Mixed Cut
Measurements .................................................................... 19.85 x 16.26 x 9.12 mm
Carat Weight ................................................................................................... 11.56 Carat
Color ........................................................ White (Yellowish) + Play of Colors (Vivid)
Transparency ................................................................................................... Translucent
ADDITIONAL GRADING CHARACTERISTICS
Optical Effect .................................................................................................. Opaliscence
Origin .......................................................................................................................... Ethiopia
Origin determination is an expert opinion based on microscopic examination, spectroscopic features and
chemical trace element analysis.
COMMENTS
No indications of treatment.
20 July, 2025
33768564
Details
Nr of stones
1
Gemstone type
Opal
Total carat weight
11.56
Gemstone colour
White
Optical effect
Play of colour
Transparency
Translucent
Treatment
No evidence of treatment
Laboratory Report
Antwerp Laboratory for Gemstone Testing (ALGT)
Sealed by laboratory
No
Shape
Pear
Cutting style
Mixed cut
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