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$500.00 USD
PVP estimado $1,500.00
1629
2

10 CTS ALEXANDRITE ROUGH PARCEL RG-4261 raregems

SKU
RG-4261
Dimensiones (mm)
7.370 x 4.970 x 2.700mm
Peso (cts)
10.000
Treatment
No Treatment
Tipo
Rough
Colores


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:  18 

LARGEST PIECE : 7.37  X  4.97  X 2.70  APPROXIMATELY 

SMALLEST PIECE: 3.66  X 2.91  X 2.71  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
:Ciudad, País
Verificado
3584 de comentarios

  • 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

  • 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

Auditoría

Este producto ha sido auditado por un :título y han encontrado lo siguiente:
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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.

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Se envía desde:
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Descripción general

Tipo de listado : Standard
ID del Producto : 2028646
Empieza : 15th November 2024 07:05 pm PST
* Todos los precios están en :moneda