Thai Black Star Sapphire - 15.48Cts - 17.7x13.1mm

Thai Black Star Sapphire - 15.48Cts - 17.7x13.1mm

$194.00

Sharp ebony black color, and a modest star on this star sapphire from Thailand, it measures 14.7x13.1mm.
All gemstones in our inventory and our jewelry are Natural mined gemstones, None are lab created,lab grown,man made, or synthetics.
  Gemstone Type   Enhancement   Clarity
  Type I Gemstones -Usually eye clean x None-Not Enhanced. A gemstone that has only undergone the standard process of cutting and polishing.   Transparent-Objects seen through the gemstone look clear and distinct.
  Examples- Aquamarine,Green & Yellow Chrysoberyl,Morganite,Tanzanite, Green Tourmaline, Blue Zircon Heat-The use of heat to effect desired alteration of color, clarity and/or phenomena. Semitransparent-Objects look slightly hazy or blurry through the stone.
      Heating and Pressure: The use of heat and pressure combined to effect desired alterations of color, clarity and/or phenomena. Translucent-Objects are vague and hard to see.
x Type II Gemstones-Usually included   Irradiation: The use of neutrons, gamma rays or beta particles (high energy electrons) to alter a gemstones color. The irradiation may be followed by a heating process. Semitranslucent-Only a small fraction of light passes through the stone, mainly around the edges.
x Examples-Alexandrite,Amethyst, Ametrine,Citrine, All Garnet, Iolite, Peridot, All Sapphire & Ruby, Spinel, Blue, Orange & Yellow Tourmaline, Green, Orange, Red or Yellow Zircon   Oiling/Resin Infusion: The filling of surface-breaking fissures with colorless oil, wax, resin or other colorless substances, except glass or plastic, to improve the gemstones appearance.  x Opaque-Virtually no light can pass through the gemstone
      Waxing/Oiling: The impregnation of a colorless wax, paraffin or oil in porous opaque or translucent gemstones to improve appearance.    
  Type III-Gemstones Almost always included   Filling: The filling of surface-breaking cavities or fissures with colorless glass, plastic, or similar substances.This process may improve durability and/or appearance, and/or to add weight.    
  Examples- Bixbite, Emerald, Red, Pink or Watermelon Tourmaline   Diffusion: The use of chemicals in conjunction with high temperatures to produce ARTIFICIAL color change and/or asterism-producing inclusions.    
      Coating: The use of such surface enhancements as lacquering, enameling, inking, foiling or sputtering of films to improve appearance, provide color or add other special effects.    

Shape:
Cabochon
Size:
14.7x13.1mm
Color:
Black
Origin:
Thailand
Model:
BLACKSTAR1548
Availability:
1 Units in Stock
Add to Cart:

Sharp ebony black color, and a modest star on this star sapphire from Thailand, it measures 14.7x13.1mm.

All gemstones in our inventory and our jewelry are Natural mined gemstones, None are lab created,lab grown,man made, or synthetics.
  Gemstone Type   Enhancement   Clarity
  Type I Gemstones -Usually eye clean x None-Not Enhanced. A gemstone that has only undergone the standard process of cutting and polishing.   Transparent-Objects seen through the gemstone look clear and distinct.
  Examples- Aquamarine,Green & Yellow Chrysoberyl,Morganite,Tanzanite, Green Tourmaline, Blue Zircon Heat-The use of heat to effect desired alteration of color, clarity and/or phenomena. Semitransparent-Objects look slightly hazy or blurry through the stone.
      Heating and Pressure: The use of heat and pressure combined to effect desired alterations of color, clarity and/or phenomena. Translucent-Objects are vague and hard to see.
x Type II Gemstones-Usually included   Irradiation: The use of neutrons, gamma rays or beta particles (high energy electrons) to alter a gemstones color. The irradiation may be followed by a heating process. Semitranslucent-Only a small fraction of light passes through the stone, mainly around the edges.
x Examples-Alexandrite,Amethyst, Ametrine,Citrine, All Garnet, Iolite, Peridot, All Sapphire & Ruby, Spinel, Blue, Orange & Yellow Tourmaline, Green, Orange, Red or Yellow Zircon   Oiling/Resin Infusion: The filling of surface-breaking fissures with colorless oil, wax, resin or other colorless substances, except glass or plastic, to improve the gemstones appearance.  x Opaque-Virtually no light can pass through the gemstone
      Waxing/Oiling: The impregnation of a colorless wax, paraffin or oil in porous opaque or translucent gemstones to improve appearance.    
  Type III-Gemstones Almost always included   Filling: The filling of surface-breaking cavities or fissures with colorless glass, plastic, or similar substances.This process may improve durability and/or appearance, and/or to add weight.    
  Examples- Bixbite, Emerald, Red, Pink or Watermelon Tourmaline   Diffusion: The use of chemicals in conjunction with high temperatures to produce ARTIFICIAL color change and/or asterism-producing inclusions.    
      Coating: The use of such surface enhancements as lacquering, enameling, inking, foiling or sputtering of films to improve appearance, provide color or add other special effects.    

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