Are black diamonds&black onyx the same stone?

Answer Black diamonds and black onyx are two very different stones. Black diamonds are a form of diamond called Carbonado that actually has formed in stellar supernovae explosions. Onyx (and black onyx) i... Read More »

Top Q&A For: Are black diamonds&black onyx the same stone

Difference Between Black Onyx & Black Sapphire?

Black onyx and black sapphire have very different properties, even though they are similar in color. Careful observation can sometimes determine if a black stone is an onyx or a sapphire, but a gem... Read More »

Where does black onyx come from?

Black onyx is a mineral popular for jewelry uses found worldwide. The main mining locations are in Brazil, India, Uruguay and California. The mines in Brazil produce onyx of the highest quality.Sou... Read More »

Where is black onyx mined?

Typically found in bands with white onyx, black onyx is mined in the United States in Colorado, Idaho, Montana, Rhode Island, South Dakota, Utah, Virginia and Wyoming. Locations of international mi... Read More »

Black Onyx History?

Onyx is a smooth type of quartz that is considered a semi-precious stone. Originally the term onyx referred to many varieties of onyx, including black, brown, white and striated. In the Victorian... Read More »