Onyx is one of the chalcedony groups with various colors. What is onyx stone? Onyx is a layered mineral that is formed on the basis of silicate. Matte onyx stone is often used to decorate gold necklaces and gold bracelets. Polished onyx is used as a ring gem after cutting. This stone is available in two types, matte and shiny. the original onyx stone is sold in the market at a reasonable price.
A small basically black onyx with a low quality might cost around $5 per carat, while a generally high-quality kind of large very black onyx could cost up to $40 per carat or mor. The kind of average price for natural kind of black onyx specifically is $40/carat or $10/gram, while synthetic black onyx costs about $6 in a subtle way. For the mentioned reasons it is widely believed that the discovery of onyx stone has revolutionized the stone extraction history. It is also interesting to know that in Persian language this stone is called Khalang and in Arabic it is known as Jaza. another characteristic of onyx stone is that it has many pores and its color can be changed with colored materials. It is necessary to know that the "hair gauge" is actually a measure of hardness of minerals from 1 to 10. Of course, it does not mean that it does not remove scratches or cracks. With this account, onyx is considered a hard and stable stone. the degree of hardness of onyx is between 7 and 10 in the Mohs unit. After black onyx, red onyx is the most popular mineral. Stones that have color are called striped agate.
This stone is often found in black in nature, but sometimes it can be seen in brown colors with white or red lines. In a country like America, onyx can be found in California. Because natural black onyx is very rare onyx stone is mainly found in countries such as India, Madagascar and Brazil. Of course, you should know that most of the black onyx available in the market are synthetic stones. Mankind has been using this precious gem in making jewelry and also its spiritual meaning together with its reasonable price for many years. White Onyx stone is a type of layered mineral whose discovery has revolutionized stone extraction industry for its several uses.
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