Onyx 12mm Square 8-Inch birthstone_sapphire but those varieties are transparent

but those varieties are transparent

Crazy Lace Agate is often dyed to produce colors that do not naturally occur in the stone

Ocean Jasper is a commercial name for Orbicular Jasper

The name derives from the recurring chevron or “dog teeth” pattern of the stripes

although sometimes mistaken for Jasper

Onyx 12mm Square 8-Inch birthstone_sapphire but those varieties are transparentOnyx 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