Australian Boulder Opal 6mm Round - 15-16 Inch Hole Size_2mm while its variations in color

while its variations in color are better known by other names: Emerald (green)

Jade is the industry name for this beautiful deep green stone

each cavity is slightly larger (or smaller) than the other to give the user the ability to tighten the crimp properly

Abalone Shell is strong and is made of stacked calcium carbonate tiles

The stone can also include its namesake sage green

Australian Boulder Opal 6mm Round - 15-16 Inch Hole Size_2mm while its variations in colorBoulder 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.