African Petrified Wood Agate 10mm Round - 15-16 Inch 26-27 inch Shungite has been used as

Shungite has been used as a folk medical treatment since the early 18th century

particularly in beaded bracelets

The two most popular classes of Australian Opal are Black Opal mined in Lightning Ridge and Fire Opal

Jade is the industry name for this beautiful deep green stone

The Ruby inclusions in this stone are pink to reddish purple to dark purple

African Petrified Wood Agate 10mm Round - 15-16 Inch 26-27 inch Shungite has been used asPetrified Wood Agate is formed from the petrifaction process of primeval trees over the course of many years. Petrification occurs when the wood is covered by sedimentary rock, as waters loosen and decompose the organic elements and replace them with silicate substances, while maintaining the wood's original structure. Preservation is enabled by a lack of oxygen.