By soaking the stone in a non-toxic chemical solution
Agate is one of many varieties of banded Chalcedony
Black Spinel not only has the dark color
This dye was said to create Michelangelo’s favorite shade of blue
and variation of the amount of iron in the stone creates a color range from reddish purple to deep violet to light lilac
Labradorite 8x12-10x14mm Side Drill Faceted Nugget A Grade - 15-16 Inch Cobalt By soaking the stone inLabradorite 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.