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23/09/2022 11:46 pm
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2743
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5.25CTS -ALEXANDERITE ROUGH COLOR CHANGE RG-3167

存货单位
尺寸(毫米)
15.900 x 9.900 x 3.700mm
重量 (cts)
5.250
Treatment
No Treatment
类型
Rough
颜色

ALEXANDERITE ROUGH   colour change

TANZANIA-MANGHOLA DUMAWANGA DISTRICT ARUSHA REGION

NICE GREEN CHANGES TO PURPLE

IDEAL FOR CABBING

TREATMENT-NONE

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.

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Standard Shipping - Tracked折扣至$30.00 ,适用于包含2或更多商品的订单
FedEx $39.00 / :几天天 $40.00 / :几天天
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FedEx折扣至$39.00 ,适用于包含2或更多商品的订单
世界其他地区
FedEx折扣至$40.00 ,适用于包含2或更多商品的订单
DHL $19.00 / :几天天 $30.00 / :几天天
世界其他地区
DHL折扣至$30.00 ,适用于包含2或更多商品的订单

raregems
raregems
raregems, all rough
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:总反馈

  • randa11at
    randa11at
    积极的

    Paid and shipped - no feedback left after 100 days

  • wtakano
    wtakano
    积极的

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

  • bainesrh
    bainesrh
    积极的

    Beautiful gemstone

  • fireflyz
    fireflyz
    积极的

    Beautiful stone! Thank you so much!

  • gvioletto
    gvioletto
    积极的

    Paid and shipped - no feedback left after 100 days

  • gvioletto
    gvioletto
    积极的

    Paid and shipped - no feedback left after 100 days

投标历史 (1)
randa11at
之前从该卖家购买过
2年前
$100.00

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送货细节

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发货自:
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概述

列表类型 : Standard
产品编号 : 830182
预计建议零售价 : $300.00
起拍价 : $100
开始 : 16th September 2022 10:45 pm PDT
结束 : 23rd September 2022 11:46 pm PDT
* 所有价格均以:货币为单位