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The finest objects brought to you by {name}

Alberto Fidalgo

Large green tanzanite, natural, with purple shades

Size: 15,22 x 9,46 x 6.10 mm
Weight: 7.36 ct
Cut: cushion (IGI certificate: barrel, fancy cut)
Colour: green with purple
Clarity: VVS1
Hardness: 7
Treatment: heated (IGI report: Violet-ish green zoisites are commonly enhanced thermally, indicative evidence is typically lacking)
Origin: Tanzania
IGI report no: R1D63363

Will be sent insured by registered mail.

Tanzania, cushion cut - IGI certificate

Green purple tanzanite, 7.36 ct

Gemstones

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Object

Faceted gemstone

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Country of origin

Zambia

Sri Lanka

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Stone

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Tanzanite

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Certification

International Gemological Institute (IGI)

Instituto Gemólogico Español (IGE)

Antwerp Laboratory for Gemstone Testing (ALGT)

International Colored Gemstone Association (ICA GemLab)

Gemological Institute of America (GIA)

Bellerophon Gemlab

Lotus Gemology

Gem Report Antwerp (GRA)

Gem research Swiss Lab (GRS)

Asian Institute of Gemological Sciences (AIGS)

GEM-TECH Istituto Gemmologico

International Jewellery & Gems Certifiers (IJGC)

Istituto Gemmologico Italiano (IGI)

Gübelin Gem Lab

Swiss Gemmological Institute (SSEF)

Netherlands Gem Laboratory (NEL)

Colour

Green

Blue

Pink

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Oval

Mixed cut

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Mixed shape

Clarity

Eye clean

Loupe clean

Slight

Moderate

Heavy

Severe

Heat treatment

Bi-colour Sapphire  - 1.41 ct - Antwerp Laboratory for Gemstone Testing (ALGT) - Ceylon

Zambia - Oiling

3 pcs  Green Emerald  - 2.22 ct - Instituto Gemólogico Español (IGE) - Oil Minor

Sri Lanka - No heat treatment

1 pcs  Violet Sapphire  - 2.06 ct - Gemological Institute of America (GIA)

1 pcs  Green Emerald  - 2.25 ct - Gemological Institute of America (GIA)

No heat treatment

No Reserve Price Tourmaline  - 2.38 ct - International Gemological Institute (IGI) - Bi Color

No evidence of treatment

No Reserve Price Sapphire  - 3.02 ct - Gem Report Antwerp (GRA) - Deep Blue

No Reserve Price Blue Sapphire  - 5.41 ct - International Colored Gemstone Association (ICA GemLab)

No Reserve Price Blue Sapphire  - 1.43 ct - International Colored Gemstone Association (ICA GemLab)

Sapphire  - 1.76 ct - Instituto Gemólogico Español (IGE)

Tanzania - Commonly heated with no evidence of treatment

Tanzanite  - 1.73 ct - Instituto Gemólogico Español (IGE)

3 pcs  Green Emerald  - 1.92 ct - Instituto Gemólogico Español (IGE) - Oil Minor

Tourmaline  - 4.11 ct - Instituto Gemólogico Español (IGE)

Sapphire  - 1.14 ct - Antwerp Laboratory for Gemstone Testing (ALGT)

No Reserve Price Pink Spinel  - 1.08 ct - International Gemological Institute (IGI)

Blue Sapphire  - 1.79 ct - International Colored Gemstone Association (ICA GemLab)

Red Ruby  - 1.20 ct - Instituto Gemólogico Español (IGE)

Commonly heated with no evidence of treatment

Blue Sapphire  - 0.59 ct - Instituto Gemólogico Español (IGE)

Gemstones

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

Green purple tanzanite, 7.36 ct

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Gemstones

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

Green purple tanzanite, 7.36 ct

Popular in Gemstones

1781 objects

Related collections