Labradorite Natural 12mm Round A Grade - 15-16 Inch Mixed Stone Sometimes called the "Black Prince's

Sometimes called the "Black Prince's Ruby" for its role in the English crown

depositing layer upon layer of Quartz silicate to create the banding and patterns now prized in Botswana Agate

It is made up of Calcite or Calcium Carbonate

Green Lodolite is Quartz with inclusions of sand

Sard is not Onyx

Labradorite Natural 12mm Round A Grade - 15-16 Inch Mixed Stone Sometimes called the "Black Prince'sLabradorite is remarkable for the way its aggregate layers refract light, creating iridescent flashes of blue, gold, pale green or copper red. This effect is known as labradorescence, taking its name from the stone. Labradorite is usually gray green, dark gray, light gray or black. It was discovered in Labrador, Canada in 1770 and named for the area, though it is referenced as a highly revered stone in much older Inuit tribal legends.