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Gemstones

Reserve price

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Closing date

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Thursday

Wednesday

tomorrow

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Sunday

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Budget

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Location

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Object

Faceted gemstone

Gemstone cabochon

Country of origin

Zambia

No origin given

Sri Lanka

Myanmar/Burma

Tanzania

Africa

Colombia

Mozambique

Madagascar

Ethiopia

Brazil

Vietnam

Afghanistan

Türkiye

Pakistan

Russia

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Kenya

Nigeria

Cambodia

Stone

Sapphire

Emerald

Spinel

Tanzanite

Aquamarine

Ruby

Topaz

Tsavorite

Tourmaline

Opal

Tourmaline paraiba

Garnet

Kunzite

Alexandrite

Amethyst

Sapphire padparadscha

Peridot

Fluorite

Morganite

Zircon

Beryl

Ametrine

Demantoid

Sphalerite

Sphene

Certification

International Gemological Institute (IGI)

International Colored Gemstone Association (ICA GemLab)

Antwerp Laboratory for Gemstone Testing (ALGT)

Gemological Institute of America (GIA)

Instituto Gemólogico Español (IGE)

Lotus Gemology

Gem research Swiss Lab (GRS)

Gem Report Antwerp (GRA)

Asian Institute of Gemological Sciences (AIGS)

Bellerophon Gemlab

Istituto Gemmologico Italiano (IGI)

Guild Gem Laboratory

Gübelin Gem Lab

Swiss Gemmological Institute (SSEF)

Anchor Cert

Colour

Blue

Green

Pink

Orange

Violet

Yellow

Purple

White

Bi-colour

Brown

Grey

Multicolour

Colourless

Oval

Mixed cut

Cushion

Pear

Modified brilliant cut

Faceted cut

Brilliant cut

Octagon

Step cut

Emerald cut

Round

Cabochon cut

Heart

Rectangle

Square

Pear shape cut

Triangle

Fancy

Radiant

Modified cut

Cut cornered square

Radiant cut

Baguette cut

Trilliant cut

Clarity

Eye clean

Slight

Moderate

Loupe clean

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

Clarity enhancement

Commonly irradiated with no evidence of treatment

Irradiation

High pressure, High temperature (HPHT) treatment

Gemstone transparency

Transparent

Semi-transparent

Translucent

Opaque

Pearl luster

Excellent

Very good

Good

Fair

Optical effect (gemstones)

Colour change

Play of colour

Opalescence

Fluorescence

Iridescence

Asterism

Adularescence

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Gemstones

993 objects

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