Packaging unit with 0.5kg; this is about 38 - 42 onyx tumbled stones.
The size of the L (large) Tumbled Stones is approx. 2.0 - 3 cm.
The name Onyx is derived from the Greek word "onyx" for "nail"; presumably this name, which has been in use for many centuries, refers to the surface of the polished stone, which resembles shiny fingernails. Spellings like onix or onyk are therefore not correct.
Onyx (black chalcedony) is important in stone medicine to strengthen sense of responsibility, logic and assertiveness.