Onyx 12mm Coin 8-Inch HPS01122023 and variation of the amount

and variation of the amount of iron in the stone creates a color range from reddish purple to deep violet to light lilac

” which means that it can appear to be different colors as it shifts in the light

tourmaline and other minerals

stalactites

with a Mohs Hardness of 8

Onyx 12mm Coin 8-Inch HPS01122023 and variation of the amountOnyx 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