Australian Boulder Opal 10mm Round - 15-16 Inch 3-4" The stone fragments remain clearly

The stone fragments remain clearly visible

An orthoproxene mineral

giving some rubies a slightly brownish or purplish tint

often called the "Super Seven" or "Melody Stone" contains Amethyst

It is named for the Amazon River in Brazil

Australian Boulder Opal 10mm Round - 15-16 Inch 3-4" The stone fragments remain clearlyBoulder 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.