THE PREMIER MARKETPLACE FOR REAL GEMS
Video Player is loading.
Current Time 0:00
Duration -:-
Loaded: 0%
Stream Type LIVE
Remaining Time -:-
 
1x
    • Chapters
    • descriptions off, selected
    • captions off, selected
      5d6dffc2cd6bc.jpg
      5d6dffc2cbc78.jpg
      5d6dffc316957.jpg
      $550.00 USD
      PVP estimado $1,400.00

      46-CTS DUMORTIERITE ROUGH SPECIMEN RARE MINERAL RG-4220 RAREGEMS

      1362
      3

      SKU
      RG-4220
      Dimensiones (mm)
      24.400 x 22.500 x 18.000mm
      Peso (cts)
      46.000
      Treatment
      No Treatment
      Tipo
      Specimen
      Colores

      DUMORTIERITE

      NICE PALE  BLUE COLOUR

      FINE CRYSTAL SPECIMEN


      Dumortierite is a fibrous variably coloured aluminium boro-silicate mineral, Al7BO3(SiO4)3O3. Dumortierite crystallizes in the orthorhombic system typically forming fibrous aggregates of slender prismatic crystals. The crystals are vitreous and vary in colour from brown, blue, and green to more rare violet and pink. Substitution of iron and other tri-valent elements for aluminium result in the colour variations. It has a Mohs hardness of 7 and a specific gravity of 3.3 to 3.4. Crystals show pleochroism from red to blue to violet. Dumortierite quartz is blue coloured quartzcontaining abundant dumortierite inclusions.

      Dumortierite was first described in 1881 for an occurrence in Chaponost, in the Rhône-Alps of France and named for the French paleontologist Eugène Dumortier (1803–1873).[4] It typically occurs in high temperature aluminium rich regional metamorphic rocks, those resulting from contact metamorphism and also in boron rich pegmatites. The most extensive investigation on dumortierite was done on samples from the high grade metamorphic Gfohl unit in Austria by Fuchs et al. (2005).

      It is used in the manufacture of high grade porcelain. It is sometimes mistaken for sodalite and has been used as imitation lapis lazuli.

      Sources of Dumortierite include Austria, Brazil, Canada, France, Italy, Madagascar, Namibia, Nevada, Norway, Peru, Poland, Russia and Sri Lanka.


      Proveedor de envío Envío a Australia Envíos al resto del mundo
      Standard Shipping - Tracked $19.00 / 7 días días $30.00 / 14 días días
      Australia
      Standard Shipping - Tracked tiene descuento a $19.00 en pedidos con 2 o más artículos
      Resto del mundo
      Standard Shipping - Tracked tiene descuento a $30.00 en pedidos con 2 o más artículos
      FedEx $39.00 / 4 días días $40.00 / 4 días días
      Australia
      FedEx tiene descuento a $39.00 en pedidos con 2 o más artículos
      Resto del mundo
      FedEx tiene descuento a $40.00 en pedidos con 2 o más artículos
      DHL $19.00 / 2 días días $30.00 / 14 días días
      Resto del mundo
      DHL tiene descuento a $30.00 en pedidos con 2 o más artículos

      raregems
      raregems, all rough
      Mermaid Beach , Australia
      Verificado
      3611 de comentarios

      • mschristine
        mschristine
        Positivo

        I am a super happy customer with these beautiful rare turquoise gems. Accurate description, shipping was fast, just a little delivery issues here in my local city. otherwise very happy customer.

      • rich7419
        rich7419
        Positivo

        Just received my Ruby it’s a cute little thing. I believe my sister-in-law will like it took a minute to get here to the states, but I am happy with my purchase would buy from you again

      • philsgems
        philsgems
        Positivo

        Great piece of emerald. I have already faceted a 2.5 carat gem from it. Thankyou

      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
      Este vendedor agrega 0.00% a las transacciones en Australia .

      Descripción general

      Tipo de listado : Standard
      ID del Producto : 2034110
      Empieza : 31st January 2025 08:47 pm PST
      * Todos los precios están en USD