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Certification: IGI (New York)
Certificate No: 577366282
Weight (ct): 5.09
Size (mm): 13.80 x 10.28 x 5.26
Shape: Oval
Clarity: Transparent
Color: Grey
Treatments: No indication of treatments
Origin: Mintabie, Australia

Large size dark crystal opal from a closed locality. This stone was bought directly from the miner, so the origin has been verified.

Origin is the opinion of the seller. All import and customs fees are the sole responsibility of the buyer.


Oval - IGI

Play of Colors Opal - 2.09 ct

Gemstones

Reserve price

No reserve price

Closing date

tomorrow

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Object

Faceted gemstone

Gemstone cabochon

Country of origin

No origin given

Zambia

Sri Lanka

Tanzania

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Unknown

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Stone

Sapphire

Emerald

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Alexandrite

Beryl

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Ametrine

Sapphire padparadscha

Spodumene

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)

Lotus Gemology

Gem Report Antwerp (GRA)

Bellerophon Gemlab

Asian Institute of Gemological Sciences (AIGS)

Gem research Swiss Lab (GRS)

Guild Gem Laboratory

GEM-TECH Istituto Gemmologico

Istituto Gemmologico Italiano (IGI)

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Deutsche Stiftung Edelsteinforschung (DSEF)

Carat Gem Lab

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Anchor Cert

Colour

Blue

Green

Pink

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Brown

White

Multicolour

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Bi-colour

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Oval

Mixed cut

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Cut cornered square

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Drop

Clarity

Eye clean

Slight

Moderate

Loupe clean

Heavy

Severe

Treatment

No evidence of treatment

Heat treatment

No heat treatment

Commonly heated with no evidence of treatment

Oiling

Not specified in the report

Clarity enhancement

Commonly irradiated with no evidence of treatment

Irradiation

Fracture healing / filling

Gemstone transparency

Transparent

Semi-transparent

Translucent

Opaque

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Pearl luster

Excellent

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Good

Fair

Optical effect (gemstones)

Colour change

Play of colour

Gemstones

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Play of Colors Opal - 2.09 ct

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