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672
5

10 CTS ALEXANDRITE ROUGH PARCEL RG-4287 RAREGEMS

SKU
RG-4287
Dimensioni (mm)
6.080 x 3.110 x 2.700mm
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: 25

LARGEST PIECE : 6.08 X 3.11 X 2.70 APPROXIMATELY

SMALLEST PIECE: 3.09 X 3.06 X 2.78 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
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  • fireflyz
    fireflyz
    Positivo

    Beautiful stone! Thank you so much!

  • gvioletto
    gvioletto
    Positivo

    Paid and shipped - no feedback left after 100 days

  • gvioletto
    gvioletto
    Positivo

    Paid and shipped - no feedback left after 100 days

  • pb21
    pb21
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    Paid and shipped - no feedback left after 100 days

  • pb21
    pb21
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    Paid and shipped - no feedback left after 100 days

40%
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Valido fino a
1st Dec 2024

Verifica

Questo prodotto è stato verificato da un Gemstone Sheriff che ha rilevato quanto segue:
  • Descrizione Preciso
  • Immagini accurate

Comments

The Verified Seller responsible for this item has diligently provided us with accurate and comprehensive information, encompassing crucial details such as weight, dimensions, and treatment. It is important to reiterate our commitment to upholding the highest standards of integrity and transparency in the gemstone industry. As part of our policy, we strictly permit the sale of exclusively natural gemstones that have been sourced directly from the Earth. However, in the event that a gemstone has undergone any form of treatment, it is mandatory for the seller to provide full disclosure regarding the treatment process. Furthermore, we would like to emphasize that man-made gemstones, including simulants and imitations, are strictly prohibited on our platform. We prioritize the promotion of authentic, natural gemstones to ensure a genuine and trustworthy marketplace for our valued customers. Should you have any further inquiries or require additional assistance, please do not hesitate to reach out. We are here to assist you and provide a seamless experience on Gem Rock Auctions.

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Tipo di elenco : Standard
Codice prodotto : 2511775
Inizia : 16th November 2024 03:15 pm PST
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