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10 CTS ALEXANDRITE ROUGH PARCEL RG-4261 raregems

1697
2

SKU
RG-4261
Afmetingen (mm)
7.370 x 4.970 x 2.700mm
Gewicht (cts)
10.000
Treatment
No Treatment
Type
Rough
Kleuren


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
Mermaid Beach , Australia
Geverifieerd
3591 feedback

  • rich7419
    rich7419
    Positief

    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
    Positief

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

  • philsgems
    philsgems
    Positief

    Great colour change. Thankyou

  • wtakano
    wtakano
    Positief

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

  • bainesrh
    bainesrh
    Positief

    Beautiful gemstone

40%
Coupon code sale
Geldig tot
1st Jan 2025

Audit

Dit product is gecontroleerd door een Gemstone Sheriff en zij hebben het volgende gevonden:
  • Beschrijving Nauwkeurig
  • Foto's Nauwkeurig

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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Verzendgegevens

Verzenden:
$30.00 14 dagen via Standard Shipping - Tracked
Schepen van:
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Betalingsmogelijkheden

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Overzicht

Vermeldingstype : Standard
Product-ID : 2028646
Begint : 13th December 2024 07:05 pm PST
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