Labradorite 8x10mm Tri Cut Faceted Rondelle - 15-16 Inch Van Fun When tumbled it can have

When tumbled it can have the look of polished steel

It may also contain rainbow to colored or sparkling inclusions

Pietersite has been called the Tempest Stone for its colors of deep blue and gray with metallic gold and flashes of brilliant chatoyancy as it catches the light

Hematite is black to steel-gray or silver-gray

Labradorite 8x10mm Tri Cut Faceted Rondelle - 15-16 Inch Van Fun When tumbled it can haveLabradorite 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.