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4.80 CTS TANZANITE BI -COLOUR CARVING PG-342

1716
10

Artikelnummer
Abmessungen (mm)
11.500 x 3.500 x 3.500mm
Gewicht (cts)
4.800
Typ
Carved
Farben

TANZANITE 

MERELANI HILLS TANZANIA

CARVING

TREATMENT-NONE

RARE COLLECTOR PC, NATURAL CLEAR CRYSTAL TANZANITE

ROYAL BLUE RICH PURPLE COLOUR 

 

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 der Welt
Standard Shipping - Tracked erhält Rabatt auf $30.00 bei Bestellungen mit 2 oder mehr Artikeln
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Rest der Welt
FedEx erhält Rabatt auf $40.00 bei Bestellungen mit 2 oder mehr Artikeln
DHL $30.00 / 2 $30.00 / 4
Rest der Welt
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preciousgems
wholesaler quality stones- TRADING SINCE 1995----All items are shipped from our Australian Head Office
Mermaid Beach , United States of America
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3318 Feedback

  • sapphireandemerald
    sapphireandemerald
    Positiv

    12/2/2024 - arrived today and they were in good conditions and the blue is amazing. IM very happy with the order

  • sapphireandemerald
    sapphireandemerald
    Positiv

    12/2/2024 - arrived today and they were in good conditions and the blue is amazing.

  • orestesg
    orestesg
    Positiv

    Paid and shipped - no feedback left after 100 days

  • nicolasvanb
    nicolasvanb
    Positiv

    Paid and shipped - no feedback left after 100 days

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Versanddetails

Versand:
$30.00 14 über Standard Shipping - Tracked
Schiffe von:
United States of America

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Überblick

Auflistungstyp : Standard
Produkt ID : 1342512
Beginnt : 18th December 2024 06:42 pm PST
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