How strong is onyx?

Answer 1

Onyx is a form or silicon dioxide (SiO2), and it is a "flavor" of quartz. It has a Mohs scale hardness of 7, and it is naturally brittle, like other forms of quartz. The hardness contributes to its strength, but it is at the same time a source of its weakness as brittle materials are subject to breakage. It can be worked and will take a high polish because it is quite hard. A link can be found below.

Answer 2

Onyx has a Mohs hardness of 6.5-7, making it relatively strong and durable for use in jewelry and decorative items. However, its toughness can vary depending on the specific structure and quality of the stone.

Answer 3

Onyx is not rare. In Mexico there is a town built mostly of onyx. A gram...perhaps a cent or less. The value of onyx is what is made from it.

Answer 4

The value of onyx is low compared to many precious stones. A small onyx stone might only be worth 20 dollars. The value varies greatly depending on the cut, size, and coloring of the stone.

Answer 5

According to GemPundit, black onyx costs $100 per carat.

Answer 6

Alot