THE PREMIER MARKETPLACE FOR REAL GEMS
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      $1,500.00 USD
      預計建議零售價:rrp

      0.72 CTS CERTIFIED ALEXANDRITE TANZANIA COLOURCHANGE TBM-793

      1128
      1

      存貨單位
      tbm-793
      尺寸(毫米)
      6.220 x 4.930 x 3.320mm
      重量 (cts)
      0.720
      Certified Gemstones
      是的
      Treatment
      No Treatment
      Clarity
      SI
      類型
      Faceted
      顏色

      ALEXANDERITE

      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.

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      DHL $30.00 / :幾天天 $30.00 / :幾天天
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      trueblueminerals
      trueblueminerals
      rare large gemstones and minerals
      :城市,國家
      已驗證
      :總反饋

      • peketrain
        peketrain
        積極的

        Very pleased with the specimen and transaction

      • scsamler
        scsamler
        積極的

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

      • gmiller69
        gmiller69
        積極的

        Paid and shipped - no feedback left after 100 days

      審計

      該產品已由Gemstone Sheriff審核,他們發現以下內容:
      • 描述準確
      • 圖片準確

      Comments

      The Verified Seller responsible for this item has diligently provided us with accurate and comprehensive information, encompassing crucial details such as weight, dimensions, and treatment. It is important to reiterate our commitment to upholding the highest standards of integrity and transparency in the gemstone industry. As part of our policy, we strictly permit the sale of exclusively natural gemstones that have been sourced directly from the Earth. However, in the event that a gemstone has undergone any form of treatment, it is mandatory for the seller to provide full disclosure regarding the treatment process. Furthermore, we would like to emphasize that man-made gemstones, including simulants and imitations, are strictly prohibited on our platform. We prioritize the promotion of authentic, natural gemstones to ensure a genuine and trustworthy marketplace for our valued customers. Should you have any further inquiries or require additional assistance, please do not hesitate to reach out. We are here to assist you and provide a seamless experience on Gem Rock Auctions.

      最後更新:日期

      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

      • stripe

      概述

      列表類型 : Standard
      產品編號 : 2239942
      開始 : 28th January 2025 02:57 pm PST
      * 所有價格均以:貨幣為單位