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The finest objects brought to you by {name}

Alberto Fidalgo

Rare, Natural Blue Sapphire. 
Perfectly suited as an investment or collector's item.
With full ALGT certificate.

*No Reserve Price* 

Species: Natural Corundum 
Variety: Sapphire
Weight: 5.28 ct 
Color: Dark Blue
Shape: Oval, Mixed Cut
Transparency: Transparent 
Treatment: No indication of heating
Surface reaching fractures
See report for more details.
ALGT report Nr: 89151 785

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Oval - ALGT (B)

No Reserve - Dark Blue Sapphire - 5.28 ct

Gemstones

Reserve price

No reserve price

Closing date

tomorrow

Wednesday

Monday

Tuesday

Friday

Thursday

29 March

28 March

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Location

Thailand

Spain

India

Germany

The Netherlands

Italy

Portugal

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United Kingdom

France

Austria

Switzerland

Poland

Cyprus

Hong Kong

Greece

Sweden

Bulgaria

Slovak Republic

Czech Republic

Ireland

Romania

United States

Object

Faceted gemstone

Gemstone cabochon

Country of origin

No origin given

Zambia

Sri Lanka

Tanzania

Ethiopia

Madagascar

Pakistan

Mozambique

Myanmar/Burma

Colombia

Brazil

Türkiye

Nigeria

Africa

Unknown

Russia

Afghanistan

Uruguay

Vietnam

Bolivia

Asia

Mali

Stone

Sapphire

Emerald

Tanzanite

Aquamarine

Spinel

Topaz

Opal

Ruby

Peridot

Tsavorite

Tourmaline

Kunzite

Garnet

Amethyst

Citrine

Fluorite

Tourmaline paraiba

Zircon

Rhodolite

Ametrine

Apatite

Diaspore

Sphalerite

Beryl

Sphene

Certification

International Gemological Institute (IGI)

Antwerp Laboratory for Gemstone Testing (ALGT)

International Colored Gemstone Association (ICA GemLab)

Instituto Gemólogico Español (IGE)

Gemological Institute of America (GIA)

Gem Report Antwerp (GRA)

Lotus Gemology

Bellerophon Gemlab

Asian Institute of Gemological Sciences (AIGS)

Gem research Swiss Lab (GRS)

Guild Gem Laboratory

Istituto Gemmologico Italiano (IGI)

Gübelin Gem Lab

GEM-TECH Istituto Gemmologico

Colour

Green

Blue

Yellow

Pink

Purple

Violet

Orange

Brown

White

Multicolour

Grey

Bi-colour

Black

Colourless

Oval

Mixed cut

Cushion

Pear

Octagon

Faceted cut

Modified brilliant cut

Emerald cut

Step cut

Brilliant cut

Round

Cabochon cut

Rectangle

Heart

Square

Modified cut

Triangle

Marquise

Fancy

Cut cornered square

Mixed shape

Trilliant cut

Pear shape cut

Fantasy

Clarity

Eye clean

Slight

Loupe clean

Moderate

Heavy

Severe

Treatment

No evidence of treatment

No heat treatment

Oiling

Heat treatment

Commonly heated with no evidence of treatment

Not specified in the report

Clarity enhancement

Commonly irradiated with no evidence of treatment

Irradiation

Fracture healing / filling

Gemstone transparency

Transparent

Semi-transparent

Translucent

Semi-translucent

Opaque

Pearl luster

Excellent

Very good

Good

Fair

Optical effect (gemstones)

Colour change

Play of colour

Fluorescence

Opalescence

Tenebrescence

Gemstones

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No Reserve - Dark Blue Sapphire - 5.28 ct

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