Drawn illustration, not a photograph
Rock

Lapis lazuli

HindiLajward

A deep blue rock flecked with gold-coloured pyrite, mined in Afghanistan for more than six thousand years.

Material
Rock: lazurite, calcite and pyrite
Colour from
Sulphur in lazurite
Hardness
5 to 5.5 on the Mohs scale
Known sources
Afghanistan, Chile
What to look for
  • An even, deep blue
  • Fine pyrite flecks and little white calcite
  • Dyeing is sometimes used and should be disclosed

CareSoft. Avoid knocks and chemicals; wipe with a damp cloth.

General guidance about the stone. Each actual stone is described individually, with its own photographs and any laboratory report, when you enquire.