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$1,600.00 USD
推定希望小売価格$3,500.00

35.75 CTS ALEXANDRITE ROUGH TANZANIA COLOUR CHANGE TBM-1125

9314
5

SKU
寸法(mm)
21.300 x 13.700 x 9.100mm
重さ (CT)
35.750
Treatment
No Treatment
タイプ
Rough

ALEXANDERITE ROUGH
 
BI-COLOUR

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.

配送業者 配送先Australia その他の国への配送
Standard Shipping - Tracked $20.00 / 7 $30.00 / 14
:国
Standard Shipping - Tracked 、 2以上のアイテムを含む注文で$25.00に割引されます
世界のその他の地域
Standard Shipping - Tracked 、 2以上のアイテムを含む注文で$30.00に割引されます
FedEx $40.00 / 3 $40.00 / 7
:国
FedEx 、 2以上のアイテムを含む注文で$40.00に割引されます
世界のその他の地域
FedEx 、 2以上のアイテムを含む注文で$40.00に割引されます
DHL $30.00 / 2 $30.00 / 21
世界のその他の地域
DHL 、 2以上のアイテムを含む注文で$30.00に割引されます

trueblueminerals
trueblueminerals
rare large gemstones and minerals
Mermaid Beach 、 Australia
確認済み
809フィードバック

  • peketrain
    peketrain
    ポジティブ

    Very pleased with the specimen and transaction

  • scsamler
    scsamler
    ポジティブ

    This stone made me fall in love with Padparadsha sapphire. Truly wonderful!

  • setillia
    setillia
    中性

    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
    ポジティブ

    Beautiful gemstone

20%
クーポンコード Gift
まで有効
31st Dec 2024

監査

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発送詳細

配送:
$30.00 14日 ( Standard Shipping - Tracked経由)
発送元:
Australia

支払いオプション

  • stripe

概要

リストタイプ : Standard
製品番号 : 1068358
始まります : 19th December 2024 01:49 am PST
* すべての価格はUSDで表記されています