Interiors & Decorations

Jewellery & Precious Stones

Watches, Pens & Lighters

Fashion

Coins & Stamps

Comics & Animation

Classic Cars, Motorcycles & Automobilia

Wine & Whisky

Asian & Tribal Art

Trading Cards

Toys & Models

Archaeology & Natural History

Sports

Music, Movies & Cameras

Books & Historical Memorabilia

The finest objects brought to you by {name}

Yuna Walter

ALGT COLORED STONE IDENTIFICATION REPORT
IDENTIFICATION
Species ......................................................................................................... Natural Zoisite
Variety ..................................................................................................................... Tanzanite
DESCRIPTION
Shape & Cutting Style ......................................................................... Pear, Mixed Cut
Measurements ....................................................................... 12.94 x 6.87 x 3.69 mm
Carat Weight ...................................................................................................... 2.39 Carat
Color ................................................................................................ Intense Violetish Blue
Transparency .................................................................................................. Transparent
ADDITIONAL GRADING CHARACTERISTICS
Suggested Origin ................................................................................................. Tanzania
COMMENTS
Tanzanite is commonly heated at low temperature to improve its color.
There is currently no scientific method available to determine whether this
gemstone has been enhanced or not.
21 March, 2024
98859726

Tanzania - Pear - ALGT (B)

1 pcs Intense Violetish Blue
 Tanzanite - 2.39 ct

Gemstones

Reserve price

No reserve price

Buy now

Closing date

Friday

tomorrow

Sunday

Saturday

Monday

2 October

Tuesday

3 October

Budget

From

Location

Spain

Thailand

Germany

The Netherlands

Portugal

France

Italy

Singapore

Hong Kong

Bulgaria

Belgium

Poland

Switzerland

United Kingdom

Austria

India

United States

Sweden

Taiwan

Israel

Malta

Slovak Republic

Czech Republic

Ireland

Latvia

Object

Faceted gemstone

Gemstone cabochon

Country of origin

Sri Lanka

Zambia

Tanzania

Brazil

Myanmar/Burma

Mozambique

Ethiopia

Pakistan

Afghanistan

Colombia

Madagascar

Congo

Africa

Australia

Cambodia

Namibia

Mexico

Bolivia

Vietnam

No origin given

Kenya

Mali

Russia

Material

Tanzanite

Spinel

Sapphire

Topaz

Aquamarine

Morganite

Beryl

Fire Opal

Ruby

Tourmaline

Emerald

Hessonite

Sphalerite

Star Sapphire

Stone

Opal

Amethyst

Zircon

Peridot

Garnet

Citrine

Kunzite

Tourmaline paraiba

Sphene

Tsavorite

Ametrine

Fluorite

Alexandrite

Certification

International Gemological Institute (IGI)

Antwerp Laboratory for Gemstone Testing (ALGT)

Certified gemologist report

No laboratory report

Instituto Gemólogico Español (IGE)

Gemological Institute of America (GIA)

Lotus Gemology

Asian Institute of Gemological Sciences (AIGS)

ALGT (B)

Bellerophon Gemlab

Gem Report Antwerp (GRA)

Gem research Swiss Lab (GRS)

Certified Gemologist

Lotus (Thailand)

Masterstones

GEM-TECH Istituto Gemmologico

International Jewellery & Gems Certifiers (IJGC)

Central Gem Laboratory (CGL)

Anchor Cert

Deutsche Stiftung Edelsteinforschung (DSEF)

Colour

Blue

Green

Pink

Yellow

Violet

Orange

Purple

Brown

Multicolour

Bi-colour

Grey

Colourless

White

Black

Oval

Mixed cut

Cushion

Pear

Faceted cut

Octagon

Round

Emerald cut

Brilliant cut

Cabochon cut

Step cut

Heart

Modified brilliant cut

Triangle

Rectangle

Square

Marquise

Mixed shape

Pear shape cut

Fantasy

Fancy

Modified cut

Squared emerald cut

Carving cut

Clarity

Eye clean

Slight

Loupe clean

Transparent

Moderate

Heavy

Severe

Translucent

Opaque

No evidence of treatment

Ametrine  - 22.51 ct - Instituto Gemólogico Español (IGE)

Heat treatment

Green Sapphire  - 1.42 ct - Gem Report Antwerp (GRA)

Zambia - Oiling

No Reserve Price Green Emerald  - 4.35 ct - International Gemological Institute (IGI) - Zambia

Clarity enhancement

No Reserve Price Violet Spinel  - 1.61 ct - International Gemological Institute (IGI)

Gemstones

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

1 pcs Intense Violetish Blue Tanzanite - 2.39 ct

1798 objects

Related collections

Cookies

Gemstones

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

1 pcs Intense Violetish Blue Tanzanite - 2.39 ct

1798 objects

Related collections