Labradorite 8mm Star Cut Coin A Grade - 15-16 Inch Shape_Rectangle It is composed of silicon

It is composed of silicon dioxide

as well as translucent and iridescent

Amazonite is a member of the feldspar family

as well as gray and white inclusions in marbled patterns

These inclusions are chromite

Labradorite 8mm Star Cut Coin A Grade - 15-16 Inch Shape_Rectangle It is composed of siliconLabradorite 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 to 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.