Australian Boulder Opal Faceted 5mm Round - 15-16 inch 5x10mm or man-made) have variations in

or man-made) have variations in colors and patterns

Turquoise is one of the oldest known gemstones

The presence of Manganese within the stone produces the purple hue

It is highly prized for its beautiful combinations of colors and for its opalescence — the pearly luster of the opaque stone

non-crystalline mineraloid consisting of a high percentage of carbon

Australian Boulder Opal Faceted 5mm Round - 15-16 inch 5x10mm or man-made) have variations inBoulder Opal is a golden brown to dark brown stone, displaying these colors in patterns of parallel bands. It is considered a precious Opal, and forms within a host rock such as ironstone or sandstone. Boulder Opal is believed to help with spiritual development, as well as with reconciling conscious and unconscious thought.