Onyx 12mm Coin 8-InchOnyx 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

and chromium lends a beautiful pink or purple

Azurite in crystal form is extremely rare and expensive

Garnet was used as far back as the Bronze Age

Dog Teeth Amethyst has a purple and white striped appearance due to its combination of Amethyst and White Quartz

all organic parts are replaced by minerals

These inclusions consist of iron

Agate is one of many varieties of banded Chalcedony

Its inclusions of red

it is believed to be a grounding stone that promotes certainty

The first rough material was offered for sale in Tucson in 2011 and is now regularly mined at the remote deposit site in Sonora

translucent stone that can appear with such bright orange hues that the ancient Egyptians called it “the setting sun

as a gemstone that is cut into many shapes and often given a high polish