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Gemstone: Natural Topaz certified by
IGE: D-40489

Weight: 25,66 ct
Size: 21,83 x 15,43 x 10,22 mm 
Shape: Oval. 
Color: Blue. 
Treatment: Irradiated. 


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Oval - IGE (Madrid)

Blue Topaz - 25.66 ct

Gemstones

Reserve price

No reserve price

Closing date

Friday

tomorrow

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14 January

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Dimensions

Height

Width

Depth

Object

Faceted gemstone

Gemstone cabochon

Country of origin

Zambia

No origin given

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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)

Gemological Institute of America (GIA)

Bellerophon Gemlab

Lotus Gemology

Gem Report Antwerp (GRA)

Gem research Swiss Lab (GRS)

Asian Institute of Gemological Sciences (AIGS)

Guild Gem Laboratory

International Jewellery & Gems Certifiers (IJGC)

Anchor Cert

Deutsche Stiftung Edelsteinforschung (DSEF)

Netherlands Gem Laboratory (NEL)

Colour

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Oval

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Clarity

Eye clean

Slight

Loupe clean

Moderate

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Severe

Treatment

No evidence of treatment

Oiling

No heat treatment

Heat treatment

Commonly heated with no evidence of treatment

Clarity enhancement

Not specified in the report

Commonly irradiated with no evidence of treatment

Irradiation

Gemstone transparency

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Pearl luster

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Optical effect (gemstones)

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Blue Topaz - 25.66 ct

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