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10 CTS ALEXANDRITE ROUGH PARCEL RG-4261 raregems

1693
2

存貨單位
RG-4261
尺寸(毫米)
7.370 x 4.970 x 2.700mm
重量 (cts)
10.000
Treatment
No Treatment
類型
Rough
顏色


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
raregems, all rough
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  • rich7419
    rich7419
    積極的

    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
    積極的

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

  • philsgems
    philsgems
    積極的

    Great colour change. Thankyou

  • wtakano
    wtakano
    積極的

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

  • bainesrh
    bainesrh
    積極的

    Beautiful gemstone

40%
優惠券代碼 sale
有效期至
1st Jan 2025

審計

該產品已由Gemstone Sheriff審核,他們發現以下內容:
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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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送貨細節

船運:
$30.00 14透過Standard Shipping - Tracked計算天數
發貨自:
Australia

付款方式

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該賣家在Australia交易中加入了0.00%稅。

概述

列表類型 : Standard
產品編號 : 2028646
開始 : 13th December 2024 07:05 pm PST
* 所有價格均以:貨幣為單位