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10 CTS ALEXANDRITE ROUGH PARCEL RG-4267 raregems

2568
6

SKU
RG-4267
Dimensioni (mm)
5.600 x 3.530 x 3.290mm
Peso (cts)
10.000
Treatment
No Treatment
Tipo
Rough
Colori


ALEXANDRITE ROUGH   colour change


TANZANIA-MANGHOLA DUMAWANGA DISTRICT ARUSHA REGION


NICE GREEN CHANGES TO PURPLE/RED

IDEAL FOR CABBING 

TREATMENT-NONE 

TOTAL PARCEL WEIGHT: 10 CARATS APPROXIMATELY  

TOTAL NUMBER OF PIECES:  21

LARGEST PIECE : 5.60  X 3.53 X 3.29 APPROXIMATELY 

SMALLEST PIECE: 6.33 X 2.49 X 2.33 APPROXIMATELY



This rare gemstone is named after the Russian tsar Alexander II (1818-1881), the very first crystals having been discovered in April 1834 in the emerald mines near the River in the Urals. The discovery was made on the day the future tsar came of age. Although alexandrite is a relatively young gemstone, it certainly has a noble history. Since it shows both red and green, the principal colours of old Imperial Russia, it inevitably became the national stone of tsarist Russia.

Alexandrite is very scarce: this is due to its chemical composition. It is basically a chrysoberyl, a mineral consisting of colourless or yellow transparent chrysoberyl, chrysoberyl cat’s eye and colour-changing alexandrite (also in cat’s eye varieties). It differs from other chrysoberyls in that it not only contains iron and titanium, but also chromium as a major impurity. And it is this very element which accounts for the spectacular colour change. Rarely, vanadium may also play a part. According to CIBJO nomenclature, only chrysoberyls displaying a distinct change of colour may be termed alexandrite.


TRADING AS TRUEBLUEOPALS / LIGHTNINGOPALS LLC

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raregems
raregems, all rough
Mermaid Beach , Australia
Verificato
3591 feedback

  • rich7419
    rich7419
    Positivo

    Just received my Ruby it’s a cute little thing. I believe my sister-in-law will like it took a minute to get here to the states, but I am happy with my purchase would buy from you again

  • philsgems
    philsgems
    Positivo

    Great piece of emerald. I have already faceted a 2.5 carat gem from it. Thankyou

  • philsgems
    philsgems
    Positivo

    Great colour change. Thankyou

  • wtakano
    wtakano
    Positivo

    Much nicer in person than in the photo. I am happy to include these into my gemstone family!

  • bainesrh
    bainesrh
    Positivo

    Beautiful gemstone

40%
Codice coupon sale
Valido fino a
1st Jan 2025

Verifica

Questo prodotto è stato verificato da Gemstone Sheriff e hanno riscontrato quanto segue:
  • Descrizione Preciso
  • Immagini accurate

Comments

The Verified Seller has provided accurate and honest pictures and details for this listing. Gem Rock Auctions is committed to holding our sellers to the highest standards of integrity and transparency. As part of this policy, we only permit the sale of natural, earth mined, gemstones. Many Gemstones have received treatments to enhance their color or clarity to further emphasize their beauty and we insist treatments are disclosed. Manmade, synthetic, and imitation gemstones are not permitted on Gem Rock auctions.

Questa verifica è stata richiesta 2 mesi fa
Ultimo aggiornamento 2 mesi fa

Dettagli di spedizione

Spedizione:
$30.00 14 giorni tramite Standard Shipping - Tracked
Spedizioni da:
Australia

Opzioni di pagamento

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Questo venditore aggiunge 0.00% tax alle transazioni in Australia .

Panoramica

Tipo di elenco : Standard
Codice prodotto : 2028640
Inizia : 13th December 2024 06:57 pm PST
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