Labradorite 2-3x4mm Irregular Rondelle Bead - 15-16 Inch feature_01042024 calcium and aluminum with trace

calcium and aluminum with trace amounts of iron

and therefore is not an Agate in the strictest terms

a type of reversible photochromism

sometimes with inclusions of Black Tourmaline

Micas are fairly light and relatively soft

Labradorite 2-3x4mm Irregular Rondelle Bead - 15-16 Inch feature_01042024 calcium and aluminum with traceLabradorite 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.