African Petrified Wood Agate 8mm Large Hole Round - 8 Inch orange ” referring to the patterns

” referring to the patterns in the stone looking like broken

and as a source of colorful mother-of-pearl

Ametrine is quartz that occurs in bands of purple and yellow

” Tourmaline is unusual in that it is both pyroelectric and piezoelectric

African Petrified Wood Agate 8mm Large Hole Round - 8 Inch orange ” referring to the patternsPetrified 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.