The Velvety black of Onyx make an unmistakable statement of power, authority and sophistication. Carved in the image of Mars, the God of War, Onyx was reputed to give courage to Roman soldiers. Its major sources are Brazil, Madagascar, Uruguay and the USA.
Velvet -Dark Black, Good Cut, Good Polish.
Moh's Hardness = 6.5 - 7.
Moh's Hardness = 6.5 - 7.
