Australian Boulder Opal 4mm Cube Faceted - 15-16 Inch Shape_Collar the result was glass permeated

the result was glass permeated with thousands of tiny metallic sparkles

with inclusions of white to colorless translucent or transparent

Distinctive for its purple-and-gray tones

Each stone is unique in terms of its patterns

Australian Boulder Opal 4mm Cube Faceted - 15-16 Inch Shape_Collar the result was glass permeatedBoulder 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.