Blue, Green Aquamarine - 12.33 ct - Antwerp Laboratory for Gemstone Testing (ALGT) - Aquamarine 12.33 ct
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Natural aquamarine of 12.33 ct with ALGT certificate, cushion shape with a mixed cut and blue colour with greenish hues, fully transparent.
AI-assisted summary
Description from the seller
Natural aquamarine 12.33 ct with AGLT certificate.
Species: Natural Beryllium
Variety: Aquamarine
Cut type: Cushion cut, mixed cut
Measurements: 15.27x13.81x9.86
Carats: 12.33
Color: light blue with greenish hues
Transparency: Transparent
Heating: There is no evidence
Additional comments: Aquamarine is commonly heated to improve its color, but there are no scientific methods to prove whether this gem has been heat-treated or not
Technical stone data:
Chemical Composition ................................................. Be3Al2(SiO3)6
Crystal System ..................................................................... Hexagonal
Mohs Hardness ........................................................................ 7.5 - 8.0
Specific Gravity ..................................................... 2.62 - 2.80 g/cm3
Optical Character .................................................................... Uniaxial-
Refractive Index ............................................................ 1.560 - 1.602
Birefringence ................................................................... 0.004 - 0.007
Natural aquamarine 12.33 ct with AGLT certificate.
Species: Natural Beryllium
Variety: Aquamarine
Cut type: Cushion cut, mixed cut
Measurements: 15.27x13.81x9.86
Carats: 12.33
Color: light blue with greenish hues
Transparency: Transparent
Heating: There is no evidence
Additional comments: Aquamarine is commonly heated to improve its color, but there are no scientific methods to prove whether this gem has been heat-treated or not
Technical stone data:
Chemical Composition ................................................. Be3Al2(SiO3)6
Crystal System ..................................................................... Hexagonal
Mohs Hardness ........................................................................ 7.5 - 8.0
Specific Gravity ..................................................... 2.62 - 2.80 g/cm3
Optical Character .................................................................... Uniaxial-
Refractive Index ............................................................ 1.560 - 1.602
Birefringence ................................................................... 0.004 - 0.007
Details
Lab report number
95836722
Gemstone type
Aquamarine
Total carat weight
12.33
Gemstone colour
Blue, Green
Transparency
Transparent
Treatment
No evidence of treatment
Laboratory report
Antwerp Laboratory for Gemstone Testing (ALGT)
Sealed by laboratory
No
Title additional information
Aquamarine 12.33 ct
Shape
Cushion
Cutting style
Mixed cut
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