Boulder Opal 10-18x17-23mm AAA Grade Small Free Form Cabochon Product Type_Crimp Covers Stromatolites date back more than

Stromatolites date back more than three billion years and are the oldest known fossils

with banding that creates vibrant landscape patterns throughout the stone

famous for producing nuggets in a wide color range from pale blue to dark green

tourmaline and other minerals

Boulder Opal 10-18x17-23mm AAA Grade Small Free Form Cabochon Product Type_Crimp Covers Stromatolites date back more thanBoulder 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. Sold individually. These cabochons are all unique and vary in colors and patterns. The image shown has 3 cabochons to give you an