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Ghene Menezes

30 November, 2023

Algt Colored Stone Identification Report # 99489566

Identification

Species ................................................................................ Natural Quartz
Variety .................................................................................................. Citrine


Description

Shape & Cutting Style ................... Petal-shaped Oval, Mixed Cut
Measurements ......................................... 37.65 x 29.27 x 19.03 mm
Carat Weight ........................................................................ 125.96 Carat
Color ...................................................................... Light Brownish Yellow
Transparency ......................................................................... Transparent


Comments

Citrine is commonly heated.

Heat treatment

1 pcs  Citrine  - 125.96 ct - Antwerp Laboratory for Gemstone Testing (ALGT)

Gemstones

Reserve price

No reserve price

Closing date

tomorrow

Tuesday

16 February

Wednesday

17 February

Thursday

Saturday

Friday

15 February

Budget

From

Location

Thailand

Spain

India

Germany

Italy

Israel

Singapore

Portugal

The Netherlands

France

United Kingdom

Sweden

Belgium

Switzerland

Canary Islands

Greece

Poland

Slovak Republic

Bulgaria

Hong Kong

Norway

United States

Austria

Taiwan

Hungary

Object

Faceted gemstone

Gemstone cabochon

Country of origin

No origin given

Zambia

Sri Lanka

Tanzania

Ethiopia

Myanmar/Burma

Mozambique

Pakistan

Africa

Colombia

Brazil

Madagascar

Türkiye

Russia

Afghanistan

Bolivia

Vietnam

Australia

Kenya

Nigeria

Unknown

Cambodia

Mexico

Stone

Sapphire

Emerald

Tanzanite

Spinel

Aquamarine

Topaz

Opal

Peridot

Ruby

Tourmaline

Amethyst

Kunzite

Garnet

Fluorite

Citrine

Tsavorite

Tourmaline paraiba

Sphalerite

Alexandrite

Ametrine

Spodumene

Sapphire padparadscha

Rhodolite

Diaspore

Apatite

Certification

International Colored Gemstone Association (ICA GemLab)

International Gemological Institute (IGI)

Antwerp Laboratory for Gemstone Testing (ALGT)

Instituto Gemólogico Español (IGE)

Gemological Institute of America (GIA)

Gem Report Antwerp (GRA)

Lotus Gemology

Gem research Swiss Lab (GRS)

Bellerophon Gemlab

Asian Institute of Gemological Sciences (AIGS)

Guild Gem Laboratory

Gübelin Gem Lab

Istituto Gemmologico Italiano (IGI)

GEM-TECH Istituto Gemmologico

CISGEM (Centro informazioni e servizi gemmologici)

Colour

Blue

Green

Yellow

Violet

Pink

Orange

Purple

White

Multicolour

Brown

Grey

Bi-colour

Black

Colourless

Oval

Mixed cut

Cushion

Pear

Modified brilliant cut

Octagon

Brilliant cut

Step cut

Faceted cut

Emerald cut

Cabochon cut

Round

Rectangle

Heart

Modified cut

Square

Fancy

Triangle

Marquise

Drop

Pear shape cut

Mixed shape

Kite

Cut cornered square

Clarity

Eye clean

Slight

Loupe clean

Moderate

Heavy

Severe

Treatment

No evidence of treatment

No heat treatment

Commonly heated with no evidence of treatment

Oiling

Not specified in the report

Commonly irradiated with no evidence of treatment

Clarity enhancement

Irradiation

Surface diffusion

Gemstone transparency

Transparent

Semi-transparent

Translucent

Semi-translucent

Pearl luster

Excellent

Very good

Good

Fair

Optical effect (gemstones)

Colour change

Play of colour

Fluorescence

Opalescence

Gemstones

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1 pcs Citrine - 125.96 ct - Antwerp Laboratory for Gemstone Testing (ALGT)

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