1 pcs Multicolour Sapphire - 1.28 ct - Antwerp Laboratory for Gemstone Testing (ALGT)
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Single round brilliant sapphire of 1.28 carats, multicolour colour-change, transparent, not heat-treated, cut in a mixed round style, identified by the Antwerp Laboratory for Gemstone Testing (ALGT).
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Description from the seller
ALGT COLORED STONE IDENTIFICATION REPORT
IDENTIFICATION
Species ................................................................................................. Natural Corundum
Variety ................................................................ Multi-Color Color-Change Sapphire
DESCRIPTION
Shape & Cutting Style .................................................... Round Brilliant, Mixed Cut
Measurements ........................................................................... 6.59 - 6.71 x 4.18 mm
Carat Weight ...................................................................................................... 1.28 Carat
Color ............................................................................................................. See Comments
Transparency .................................................................................................. Transparent
ADDITIONAL GRADING CHARACTERISTICS
Optical Effect ................................................................................ Color-Change Effect
COMMENTS
Color:
In daylight: Light Brownish Yellow/Light Violetish Blue/Light Green.
In incandescent light: Pink.
No indications of heating.
13 November, 2025
04780404
ALGT COLORED STONE IDENTIFICATION REPORT
IDENTIFICATION
Species ................................................................................................. Natural Corundum
Variety ................................................................ Multi-Color Color-Change Sapphire
DESCRIPTION
Shape & Cutting Style .................................................... Round Brilliant, Mixed Cut
Measurements ........................................................................... 6.59 - 6.71 x 4.18 mm
Carat Weight ...................................................................................................... 1.28 Carat
Color ............................................................................................................. See Comments
Transparency .................................................................................................. Transparent
ADDITIONAL GRADING CHARACTERISTICS
Optical Effect ................................................................................ Color-Change Effect
COMMENTS
Color:
In daylight: Light Brownish Yellow/Light Violetish Blue/Light Green.
In incandescent light: Pink.
No indications of heating.
13 November, 2025
04780404
Details
Nr of stones
1
Gemstone type
Sapphire
Total carat weight
1.28
Gemstone colour
Multicolour
Optical effect
Colour change
Transparency
Transparent
Treatment
No heat treatment
Laboratory Report
Antwerp Laboratory for Gemstone Testing (ALGT)
Sealed by laboratory
No
Shape
Round
Cutting style
Mixed cut
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