Onyx -

Onyx

 

 Birthstone - February

 Moh's scale of hardness - 6.5 - 7

 Colour - Black with straight banding in white and brown, can also appear brownish red

 Cut - As cabochons, beads or intaglio carvings

 Found - a form of chalcedony, quartz

 Care Tip - Onyx can be porous and absorb liquid so do not soak in water or clean with chemicals instead use a soft damp cloth then dry