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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

tomorrow

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Thursday

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12 January

11 January

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Location

Thailand

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Dimensions

Height

Width

Depth

Object

Faceted gemstone

Gemstone cabochon

Country of origin

Zambia

Sri Lanka

No origin given

Myanmar/Burma

Tanzania

Ethiopia

Nigeria

Colombia

Brazil

Mozambique

Africa

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Stone

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Mixed gemstones

Citrine

Morganite

Spodumene

Sapphire padparadscha

Rhodolite

Certification

International Gemological Institute (IGI)

International Colored Gemstone Association (ICA GemLab)

Instituto Gemólogico Español (IGE)

Antwerp Laboratory for Gemstone Testing (ALGT)

Gemological Institute of America (GIA)

Bellerophon Gemlab

Lotus Gemology

Gem Report Antwerp (GRA)

Gem research Swiss Lab (GRS)

Asian Institute of Gemological Sciences (AIGS)

Deutsche Stiftung Edelsteinforschung (DSEF)

Netherlands Gem Laboratory (NEL)

Guild Gem Laboratory

Istituto Gemmologico Italiano (IGI)

Gemewizard Gemological Laboratory (GWLab)

Anchor Cert

Colour

Blue

Green

Pink

Violet

Orange

Purple

Yellow

White

Brown

Multicolour

Grey

Colourless

Bi-colour

Oval

Mixed cut

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Round

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Drop

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Marquise

Mixed shape

Cut cornered square

Clarity

Eye clean

Slight

Loupe clean

Moderate

Heavy

Severe

Treatment

No evidence of treatment

No heat treatment

Heat treatment

Oiling

Commonly heated with no evidence of treatment

Not specified in the report

Commonly irradiated with no evidence of treatment

Clarity enhancement

Irradiation

Surface diffusion

Gemstone transparency

Transparent

Semi-transparent

Translucent

Opaque

Semi-translucent

Pearl luster

Excellent

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Good

Fair

Optical effect (gemstones)

Play of colour

Colour change

Gemstones

This object is no longer available, but there’s still lots to explore

Blue Topaz - 25.66 ct

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Gemstones

This object is no longer available, but there’s still lots to explore

Blue Topaz - 25.66 ct

Popular in Gemstones

1405 objects

Related collections