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$65.00 USD
Precio
5344
6

6.42 CTS SAPPHIRE CRYSTALS SIR LANKA [MGW3599]

SKU
Dimensiones (mm)
18.000 x 7.000 x 6.000mm
Peso (cts)
Certified Gemstones
No
Treatment
No Treatment, Heat Treatment, Beryllium Treatment, Surface Diffusion
Tipo
Rough
Colores

IMPORTANT NOTE: This item contains fissure filled cavities that may contain glass, cobalt, or other materials. Due to the presence of these materials, this item should be referred to as a composite stone.

 SAPPHIRE ROUGH CRYSTAL

 

 This is a specimen of natural untreated sapphire crystal from Sir Lanka .

It was selected due to it well formed crystal formations.Great specimen.

 

Weight 6.42 cts app

 

Size 18 x 7 x 6 mm app

 

Sapphire is one of the two gem varieties of the species corundum. Although blue is the best known hue, the gem occurs in virtually every spectral hue excepting red. Red corundum is a ruby. Sapphire may also be colorless, and it also occurs in the non-spectral shades, gray and black. Yellow and green sapphires have traces of iron that gives them their color. Pink sapphires have a trace of the element chromium and the deeper the color pink the higher their monetary value as long as the color is going toward the red of rubies. Sapphires also occur in shades of orange and brown, and colorless sapphires are sometimes used as diamond substitutes in jewelry. Salmon-color padparadscha sapphires often fetch higher prices than many of even the finest blue sapphires.  

 

Treatments

Some natural sapphires are heated to improve or enhance color. This is usually done by heating the sapphires to temperatures of up to 1800 °C for several hours, or by heating in a nitrogen deficient atmosphere oven for seven days or more. On magnification, the silk due to included rutile needles are often visible. If the needles are unbroken, then the stone was not heated; if the silk is not visible then the stone was heated adequately. If the silk is partially broken, then a process known as low tube heat may have been used. Low tube heat is the process whereby the rough stone is heated to 1300 °C over charcoal for 20 to 30 minutes. This removes grey or brown in the stone and improves color saturation.

 

 

Proveedor de envío Envío a Australia Envíos al resto del mundo
FedEx $12.00 / 3 días días $39.00 / 10 días días
Australia
FedEx tiene descuento a $12.00 en pedidos con 2 o más artículos
Resto del mundo
FedEx tiene descuento a $39.00 en pedidos con 2 o más artículos
Registered Shipping $9.00 / 7 días días $16.00 / 21 días días
Australia
Registered Shipping tiene descuento a $9.00 en pedidos con 2 o más artículos
Resto del mundo
Registered Shipping tiene descuento a $16.00 en pedidos con 2 o más artículos

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
19054 de comentarios

  • martin11
    martin11
    Positivo

    Great thank very much, lovely pearls.

  • philsgems
    philsgems
    Positivo

    Nice piece of rough. thankyou

  • philsgems
    philsgems
    Positivo

    Nice stone. Thankyou

  • philsgems
    philsgems
    Positivo

    Have received the rough. Nice colour. Thankyou

  • ryumaru
    ryumaru
    Positivo

    Beautiful ametrine. Very fast delivery. Professional seller

5%
Código promocional SEDADEALS
Válido hasta
2nd Jan 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 : 376465
Empieza : 19th December 2024 02:00 am PST
* Todos los precios están en USD