Australian Boulder Opal 5-6mm Round Necklace - 15-16 Inch 10-12 black or brown veins running

black or brown veins running through it in web to like patterns

Von Prehn discovered the stone in South Africa in 1774

found only in the Dominican Republic

Tourmalated Quartz is clear Quartz that has formed with Black Tourmaline

Australian Boulder Opal 5-6mm Round Necklace - 15-16 Inch 10-12 black or brown veins runningBoulder 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. This gemstone strand comes as a complete necklace including a base metal lobster clasp and 2" extender, but you can cut it and