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$1,200.00 USD
预计建议零售价:rrp

24 CTS ALEXANDRITE ROUGH TANZANIA COLOUR CHANGE TBM-707

存货单位
尺寸(毫米)
17.000 x 13.000 x 12.000mm
重量 (cts)
24.000
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 $20.00 / :几天天 $30.00 / :几天天
:国家
Standard Shipping - Tracked 对包含 2 或更多商品的订单折扣为 $25.00
世界其他地区
Standard Shipping - Tracked 对包含 2 或更多商品的订单折扣为 $30.00
FedEx $40.00 / :几天天 $40.00 / :几天天
:国家
FedEx 对包含 2 或更多商品的订单折扣为 $40.00
世界其他地区
FedEx 对包含 2 或更多商品的订单折扣为 $40.00
DHL $30.00 / :几天天 $30.00 / :几天天
世界其他地区
DHL 对包含 2 或更多商品的订单折扣为 $30.00

trueblueminerals
trueblueminerals
rare large gemstones and minerals
:城市,国家
已验证
:总反馈

  • peketrain
    peketrain
    积极的

    Very pleased with the specimen and transaction

  • setillia
    setillia
    中性的

    Responsive seller, which is appreciated. Lovely gem. The only issue was with shipping. I paid for post but it was sent via Fedex. Fedex (of course) charged me illegal fees over a month after delivery! This was why I chose post and not Fedex.

  • bainesrh
    bainesrh
    积极的

    Beautiful gemstone

  • olga22220
    olga22220
    积极的

    Paid and shipped - no feedback left after 100 days

审计

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送货细节

船运:
$30.00 :通过 Standard Shipping - Tracked 计算天数
发货自:
Australia

付款方式

  • stripe

概述

列表类型 : Standard
产品编号 : 1529215
开始 : 21st November 2024 08:12 am PST
* 所有价格均以:货币为单位