Onyx

This unique gemstone from the quartz family comes in colours of black and white or brown and white. Onyx is produced by soaking agate in a sugar solution, then heating it in sulphuric acid to carbonise the sugar particles. These gemstones are found worldwide and are typically stained to improve or change their colour. Onyx will give any piece of jewellery a minimalist, contemporary look. Onyx is believed to promote stamina and alleviate worries and fears.

Birthstone: December
Moh hardness: 7 (1 softest to 10 hardest)

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Onyx care

Onyx is a reasonably durable gemstone however it will need some to be looked after to keep it looking beautiful. Onyx should be stored in a soft pouch or jewellery box to prevent scratching and damage. Soap and liquid cleaners should be avoided as these may cause the stone to become dull. Harsh detergents or chemicals such as bleach or chlorine could cause erosion of the stone. To clean onyx jewellery rinse thoroughly with water and dry with a soft jewellery cloth.