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$2,566.00
Current Bid
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30/03/2021 02:06 am
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97.70CTS TANZANITE CRYSTAL SPECIMEN [S7409 ]

SKU
Dimensions (mm)
43.000 x 18.000 x 11.000mm
Weight (cts)
97.700
Type
Specimen
Colours

MEMBER OF iNTERNATIONAL COLOURED ASSOCIATION COMMITED TO FULL DISCLOSURE OF STONES WITH A MONEY BACK GUARANTEE.

TANZANITE CRYSTAL SPECIMEN.

This is a quality natural crystal specimen which i hand selected from a large parcel when i was at the Arusha gem show.According to the miner most of there material is a natural colour when mined and is not heated.This is a great specimen for any collection.

Weight 97.70 cts app

size 43X18X11mm app

Tanzanite is an extraordinary gemstone. It occurs in only one place worldwide -Tanzair africa. Its blue, surrounded by a fine hint of purple, is a wonderful colour. Thanks to its unusual aura and the help of the New York jeweller’s Tiffany, it has rapidly become one of the most coveted gemstones in the world.

Tanzanite is a blue variety of the gemstone zoisite. It consists of calcium aluminium silicate and is not particularly hard, having a value of 6.5 to 7 on the Mohs scale. For that reason, it should always be worn carefully and never placed in an ultrasonic bath for cleaning or brought into contact with acids.

The deep blue of the tanzanite is fantastic, and runs from ultramarine blue to light violet-blue. The most coveted colour is a blue surrounded by a delicate hint of purple, which has a particularly wonderful effect in sizes of over 10 carats. The well developed polychromaticity of the tanzanite is typical: depending on the angle from which you look at it, the stone may appear blue, purple or brownish-yellow. Having said that, most raw crystals are somewhat spoiled by a brownish-yellow component, though it can be made to disappear by the cutter if he heats the stone carefully in an oven to approximately 500°. During the procedure he must pay careful attention to the moment at which the colour turns to blue. This burning is a method of treatment which is regarded as customary in the trade, but the raw stones must be as free of inclusions as possible, since otherwise fissures may occur. In fact working with tanzanite can sometimes give even the most experienced cutter a bit of a headache, the cleavage of this gemstone being very pronounced in one direction. This exclusive gemstone is cut in every imaginable shape from the classical round shape to a number of imaginative designer cuts.

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Rest of the world
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Registered Shipping $9.00 / 7 days $16.00 / 21 days
Australia
Registered Shipping is discounted to $9.00 on orders with 2 or more items
Rest of the world
Registered Shipping is discounted to $16.00 on orders with 2 or more items

sedagems
sedagems
MEMBER OF THE  [ICA] INTERNATIONAL COLOURED STONE ASSOCAITION AND PRESIDENT OF THE OPAL ASSOCIATION. PAUL SEDAWIE IS A FORMER OPAL MINER WHO NOW TRAVELS AROUND AUSTRALIA AND THE WORLD COLLECTION RARE AND INTERESTING GEMS TONES AND FOSSILS.ALL STOCK HAS A MONEY BACK GUARANTEE We have a retail shop/museum at the Gold Coast Opal and Gem Centre 25 surfers av mermaid waters Qld Australia .4218 open mon to sat 10 to 5
Mermaid Waters, Australia
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Bids History (1)
overland
Purchased from this seller previously
2 years ago
$2565.00

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Shipping Details

Shipping:
$16.00 21 days via Registered Shipping
Ships from:
Australia

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Overview

Listing Type : Standard
Product ID : 1048292
Estimated RRP : $9,500.00
Starting Bid : $2,565
Starts : 30th March 2021 01:20 pm AEST
Ends : 30th March 2021 07:06 pm AEST
* All prices are in USD