THE PREMIER MARKETPLACE FOR REAL GEMS
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      $510.00 USD
      Procijenjeni RRP $2,200.00

      51.40 cts ALEXANDRITE COLOUR CHANGE ROUGH TBM-97TRUEBLUEMINERALS

      2755
      9

      SKU
      TBM-97
      Dimenzije (mm)
      28.400 x 17.200 x 14.300mm
      Težina (cts)
      51.400
      Treatment
      No Treatment
      Clarity
      N/A
      Tip
      Rough
      Boje

      ALEXANDERITE BI-COLOUR TANZANIA-MANGHOLA DUMAWANGA DISTRICT ARUSHA REGION NICE GREEN CHANGES TO PURPLE IDEAL FOR CABBING TREATMENT-NONE 0 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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      trueblueminerals
      trueblueminerals
      rare large gemstones and minerals
      Mermaid Beach , Australia
      Provjereno
      814 povratne informacije

      • peketrain
        peketrain
        Pozitivan

        Very pleased with the specimen and transaction

      • scsamler
        scsamler
        Pozitivan

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

      • gmiller69
        gmiller69
        Pozitivan

        Paid and shipped - no feedback left after 100 days

      Revizija

      Program Gemstone Sheriff omogućuje našim članovima da zatraže reviziju bilo kojeg proizvoda, koju dovršava neovisna Gemologist koja procjenjuje točnost opisa artikla i slika.

      Detalji dostave

      dostava:
      $30.00 14 days putem Standard Shipping - Tracked
      Brodovi iz:
      Australia

      Načini plačanja

      • stripe

      Pregled

      Vrsta unosa : Standard
      Identifikacijski broj proizvoda : 1952349
      Počinje : 29th January 2025 02:37 pm PST
      * Sve cijene su u USD