Onyx 12mm Square 8-Inch Color_Black Petrified Wood Agate is formed

Petrified Wood Agate is formed from the petrifaction process of primeval trees over the course of many years

as waters loosen and decompose the organic elements and replace them with silicate substances

and the wood used to make them is only available after natural disasters fell young trees

However in some regions

but it can also occur as orange

Onyx 12mm Square 8-Inch Color_Black Petrified Wood Agate is formedOnyx is a black and white banded Chalcedony, a cryptocrystalline Quartz. It is often thought of as an all black stone, and much of the black Onyx on the market has been artificially colored. Onyx has been both revered and feared throughout history. It is referenced in many sacred texts and historical manuscripts and is the first precious stone mentioned in the Bible. However in some regions, such as China, it was feared for centuries as a bad luck