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Francesca Floramo

ALGT COLORED STONE IDENTIFICATION REPORT
IDENTIFICATION
Species ................................................................................................. Natural Corundum
Variety ...................................................................................................................... Sapphire
DESCRIPTION
Shape & Cutting Style ......................................................................... Oval, Mixed Cut
Measurements .......................................................................... 7.60 x 5.38 x 5.97 mm
Carat Weight ...................................................................................................... 2.58 Carat
Color ................................................................................................................... Intense Blue
Transparency .................................................................................................. Transparent
COMMENTS
No indications of heating.
18 November, 2025
82717909

No heat treatment

1 pcs  Blue Sapphire  - 2.58 ct - Antwerp Laboratory for Gemstone Testing (ALGT)

Gemstones

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tomorrow

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7 October

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Object

Faceted gemstone

Gemstone cabochon

Country of origin

No origin given

Zambia

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Certification

International Gemological Institute (IGI)

International Colored Gemstone Association (ICA GemLab)

Antwerp Laboratory for Gemstone Testing (ALGT)

Instituto Gemólogico Español (IGE)

Bellerophon Gemlab

Gemological Institute of America (GIA)

Gem Report Antwerp (GRA)

Lotus Gemology

Gem research Swiss Lab (GRS)

Gemological Science International (GSI)

Asian Institute of Gemological Sciences (AIGS)

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Heat treatment

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Not specified in the report

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Commonly irradiated with no evidence of treatment

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1 pcs Blue Sapphire - 2.58 ct - Antwerp Laboratory for Gemstone Testing (ALGT)

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