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      $24.00 USD
      Precio

      192 CTS LABRADORITE ROUGH PARCEL [F8874]

      2505
      7

      SKU
      Dimensiones (mm)
      16.500 x 7.000 x 8.000mm
      Peso (cts)
      192.500
      Tipo
      Rough
      Colores

      QUALITY ROUGH

      LABRADORITE ROUGH

      This is a parcel of natural labradorite rough ready for cutting.The material has been  wet to show the colour.This parcel will cut smaller stones and we have included the size of the largest stone.

      Weight of parcel 200 cts app

      Size of largest stone  20 x  14 x 6 mm app

       

      Labradorite is truly a fascinatingly beautiful mineral which reminds me of black opal. Its a mineral whose charm is not fully noticed and may be overlooked if not viewed from the proper position. Generally a dull, dark looking mineral with no special virtue until the colorful shiller is observed glowing on the surface. Labradorite can produce a colorful play of light across cleavage planes and in sliced sections called labradorescence. The usually intense colors range from the typical blues and violets through greens, yellows and oranges. Some rare specimens display all these colors simultaneously.

       

      The color display is from lamellar intergrowths inside the crystal. These intergrowths result from compatible chemistries at high temperatures becoming incompatible at lower temperatures and thus a separating and layering of these two phases. The resulting color effect is caused by a ray of light entering a layer and being refracted back and forth by deeper layers. This refracted ray is slowed by the extra travel through the layers and mixes with other rays to produce a light ray coming out that has a different wavelength than when it went in. The wavelength could correspond to the wavelength of a particular color, such as blue. The effect depends on the thickness and orientation of the layers. If the layers are too thick or too thin no color shiller is seen. Also if the viewer does not observe from the precise angle or if light is not supplied from the proper angle then no color shiller is seen. The labradorescence is truly a one of a kind mineralogical experience and must be observed in person in order to truly appreciate its beauty.

      Labradorite is a member of the plagioclase series of minerals. The plagioclase series comprises felspars that range in chemical composition from pure NaAlSi3 O8 to pure CaAl2 Si2 O8 . Labradorite is defined at approximately the 50% to 70% CaAl2 Si2 O8 . Labradorite by definition must contain 50-70% calcium to 50-30% sodium in the sodium/calcium position of the crystal structure. All members of the plagioclase series usually display lamellar twinning called "Albite Twinning". The twinning is caused by a error in the crystal structure during its growth.


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      sedagems
      Hi Welcome to the Sedagems store, Run by Paul Sedawie and specializing in Australian sapphires and gems stones he has collected on his many buying trips world wide. All stock has a money back guarantee as your continued business is our business.
      Mermaid Waters , Australia
      Verificado
      19220 de comentarios

      • rickferreira626
        rickferreira626
        Positivo

        A gorgeous pair blue topaz stones. This is one happy customer.

      • opalgoat
        opalgoat
        Positivo

        Well packaged, beautiful gems

      • opalgoat
        opalgoat
        Positivo

        Well packaged, beautiful gems

      • opalgoat
        opalgoat
        Positivo

        Well packaged, beautiful gems

      • opalgoat
        opalgoat
        Positivo

        Well packaged, beautiful gems

      10%
      Código promocional SEDADEALS
      Válido hasta
      4th Mar 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:
      $16.00 21 días a través de Registered Shipping
      Se envía desde:
      Australia

      Opciones de pago

      • paypal
      • stripe
      Este vendedor agrega 10.00% a las transacciones en Australia .

      Descripción general

      Tipo de listado : Standard
      ID del Producto : 1341204
      Empieza : 13th February 2025 05:32 pm PST
      * Todos los precios están en USD