Australian Boulder Opal Faceted 3mm Round - 15-16 Inch featured_09252025 Prehnite is translucent to transparent

Prehnite is translucent to transparent

The blue colors are photosensitive and may fade when exposed to excessive light or heat

brown or orange organic gem

decision making and creative thinking

Australian Boulder Opal Faceted 3mm Round - 15-16 Inch featured_09252025 Prehnite is translucent to transparentBoulder 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.