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      $3,000.00 USD
      PVP estimado $9,000.00

      6000 CTS AUSTRALIAN EMERALD QUALITY SPECIMEN TBM-2344 trueblueminerals

      2267
      2

      SKU
      Dimensiones (mm)
      146.000 x 94.000 x 62.000mm
      Peso (cts)
      6000.000
      Shape
      Emerald
      Treatment
      No Treatment
      Tipo
      Specimen
      Colores

      AUSTRALIAN EMERALD

      Curlew Emerald Mine, Shaw River District, East Pilbara Shire, Western Australia, Australia

      STUNNING SPECIMEN

      TREATMENT -NONE

      COLLECTOR PC

       GREEN-CRYSTAL

      HAS PURPLE FLOURITE INCLUSION

      ON HOST ROCK

      Specimens can consist Light green beryl crystals to green beryl coloration, with minor dark biotite specks mica ,schist and purple fluorite inclusions.

      The dark mica schists within the quartz veins and pegmatites contain gem quality emerald crystals and green beryl. As is typical of Western Australian emerald


      Beryl Be3Al2(Si6O18) , Biotite K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 or Simplified: K(Mg,Fe)3AlSi3O10(OH)2 , Quartz SiO2



      Curlew Emerald Mine, Shaw River District, East Pilbara Shire, Western Australia, Australia


      Nearly all production of emerald in Western Australia has been from a deposit at Poona but there are beryl and emerald deposits at Menzies and in the Pilbara region, south of Port Hedland.

      Australian emeralds

      Emeralds have been commercially mined in Australia in three main deposits Poona and Menzies in Western Australia, and Emmaville in New South Wales. The emeralds are usually in rocks among layers of other minerals such as mica. Open pit mining or terrace mining are the most common methods.
      discovered in Western Australia in 1912 at Poona, 500 km north-east of Perth. The main mine of the district was the Aga Khan which operated on and off for more than 70 years until 1980 and yielded an estimated 10,000 grams of mostly low value emerald. During the1980s another mine in WA was worked some 40kms west of Menzies.
      In Australia, emerald is associated with granite pegmatites and metamorphosed rocks called schists. It is also sometimes associated with altered limestones or can be found embedded in calcite or quartz. A pegmatite forms when a magma cools, leaving some elements behind in the remaining fluid. Emerald crystals may grow when the remaining solution cools as long as the necessary elements are present, including beryllium. Emeralds can also form in veins in the crust from hot liquids that escape from a deeper magma.

      Processing

      Screens are used to sort the emeralds by size and then silt and clays are washed away to expose the emerald-bearing schist. No other chemicals are used in this process. Any schist or other rock still attached to the emerald is removed manually in a process called cobbing. Higher quality materials can be cleaned using high-pressure air.

      Mining

      Emeralds have been commercially mined in Australia in three main deposits Poona and Menzies in Western Australia, and Emmaville in New South Wales. The emeralds are usually in rocks among layers of other minerals such as mica. Open pit mining or terrace mining are the most common methods. Miners dig a pit with shovels, excavators or other earth moving equipment, depending on the scale of the mine. If the emerald-bearing ore is beneath a substantial cover of soil and rock, explosives might be used to remove this material. Sometimes high pressure water is used to blast the rock to reveal mineral bearing rocks. Tunnels are also used to extract emeralds from deeper rock layers.


      Proveedor de envío Envío a Australia Envíos al resto del mundo
      Standard Shipping - Tracked $20.00 / 7 días días $30.00 / 14 días días
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      Resto del mundo
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      FedEx $40.00 / 3 días días $40.00 / 7 días días
      Australia
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      Resto del mundo
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      DHL $30.00 / 2 días días $30.00 / 21 días días
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      trueblueminerals
      trueblueminerals
      rare large gemstones and minerals
      Mermaid Beach , Australia
      Verificado
      815 de comentarios

      • virginiemillefiori
        virginiemillefiori
        Negativo

        unfortunately the colors in person under artificial or natural light look nothing like the ones posted on the listing. The stone appears very dark blue and it is hard to guess it is a parti sapphire.

      • peketrain
        peketrain
        Positivo

        Very pleased with the specimen and transaction

      • scsamler
        scsamler
        Positivo

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

      20%
      Código promocional love
      Válido hasta
      28th Feb 2025

      Auditoría

      El programa Gemstone Sheriff permite a nuestros miembros solicitar una auditoría de cualquier producto, que es realizada por un Gemologist independiente que evalúa la precisión de la descripción del artículo y las imágenes.

      Detalles de envío

      Envío:
      $30.00 14 días a través de Standard Shipping - Tracked
      Se envía desde:
      Australia

      Opciones de pago

      • stripe

      Descripción general

      Tipo de listado : Standard
      ID del Producto : 1550753
      Empieza : 13th February 2025 02:40 pm PST
      * Todos los precios están en USD