Onyx | First State Auctions


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Important information Onyx is often used in jewellery to complement other gemstones and metals. The polished, consistent colour of onyx lends itself to this purpose very well, and is often used in jewellery for this reason. Onyx has been used for centuries to make rosaries.
Colour: Black, black with white bands, sometimes red, brown or reddish brown.
Family: Quartz (and very closely related to agate)
Hardness: 7 out of 10 on the Mohs scale
Mythology: Onyx is believed to help its wearer control their emotions.