Australian Boulder Opal 4mm Cube Faceted - 15-16 Inch Shape_Collar and inlay placement should be

and inlay placement should be expected

Distinctive for its purple-and-gray tones

Each stone is unique in terms of its patterns

Its inclusions of golden tones to rust to red are due to traces of hematite embedded in the stone

and it is the official birthstone of that month

Australian Boulder Opal 4mm Cube Faceted - 15-16 Inch Shape_Collar and inlay placement should beBoulder 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.