Imported from Brazil, Afghanistan, India, Madagascar, Peru and the US. The deposition of silica forms the black colour of this gemstone in gas cavities in lava. Hand carved in round-cut with a total weight of 0.94 Ct. and 7mm. With a hardness of 7Mohs, it is one of the hardest stones on the planet. The gemstone comes with a leather finish box to secure the gemstone from getting damaged.

• Hardness: 7 Mohs
• Gemstone Cut: Round
• Gemstone Weight: 0.94 Ct.
• Size: 7mm

• Size
  7 MM
• Colour
  Black
• Product Code
  6170871
• Number of Gemstones
  1
• Total Gem Weight
  0.940ct.
• Type
  gemstone
• Packing
  Boxed
• Gemstone Grade
  A
• No Of Pieces
  1
• Gemstone Family
  onyx
• Main Stone Name 
  onyx
• Shape
  Round