Onyx 8mm Faceted Rondelle Large Hole 8-Inch HPS09152022 and the green color is

and the green color is caused by a reaction in the stone when the chrome is introduced to water

It is one of the world’s oldest known stones

"water web" matrix

red and brown

Onyx 8mm Faceted Rondelle Large Hole 8-Inch HPS09152022 and the green color isOnyx 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