Topaz (Semi Precious Stones)

Topaz is the best and cheaper substitute for Yellow Sapphire (Pokhraj). This is never adverse.

  • Name : Hindi : Sunela.
  • Gem-Group : Quartz.
  • Crystal Structure : Trigonal.
  • Composition : Silicon Dioxide, SiO2.
  • Hardness : 7
  • Planet : Jupiter ( Guru ).
  • Availability : Brazil, Spain, U.S.S.R, INDIA.
  • Specific Gravity : 2.65
  • Refractive Index : 1.54-1.55
  • Double Refraction :  0.009
  • Lustre : Vitreous.
  • Process : Same process like Yellow Sapphire ( Pokhraj ).