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Alberto Fidalgo

Certificate Date                04/04/2025
Certificate Number                1830012688
Identification                        Natural Topaz
Shape and cutting style                Oval Mixed Cut - 
Measurements (in mm)                27.01 x 18.29 x 10.56  - 

Grading results
Weight (in carat)                48.35 ct
Transparency                        Transparent
Color                        Blue
Comments
This color of topaz is commonly treated by 
heat and/or irradiation to improve its color.

Commonly irradiated with no evidence of treatment

No Reserve Price - 1 pcs  Blue Topaz  - 48.35 ct - Gem Report Antwerp (GRA)

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Object

Faceted gemstone

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No origin given

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Certification

International Gemological Institute (IGI)

Antwerp Laboratory for Gemstone Testing (ALGT)

International Colored Gemstone Association (ICA GemLab)

Instituto Gemólogico Español (IGE)

Gemological Institute of America (GIA)

Gem Report Antwerp (GRA)

Lotus Gemology

Bellerophon Gemlab

Asian Institute of Gemological Sciences (AIGS)

Gem research Swiss Lab (GRS)

Guild Gem Laboratory

GEM-TECH Istituto Gemmologico

Carat Gem Lab

Gübelin Gem Lab

Istituto Gemmologico Italiano (IGI)

No laboratory report

Colour

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Clarity

Eye clean

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Loupe clean

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Treatment

No evidence of treatment

No heat treatment

Oiling

Heat treatment

Commonly heated with no evidence of treatment

Not specified in the report

Clarity enhancement

Irradiation

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Gemstone transparency

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No Reserve Price - 1 pcs Blue Topaz - 48.35 ct - Gem Report Antwerp (GRA)

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