African Petrified Wood Agate 6-7mm Table Cut Cube Bead - 15-16 Inch Grey Druzy Agate this gemstone in its polished

this gemstone in its polished state looks like what it would be like to capture smoke in a stone -- bottomless black mixed with white wisps

gray and white

Mexican Black and Red Zebra Jasper has banded and marbled patterns of translucent to opaque milky white

Cherry Quartz is a manmade mixture of clear glass with swirls and flecks of deep pink

African Petrified Wood Agate 6-7mm Table Cut Cube Bead - 15-16 Inch Grey Druzy Agate this gemstone in its polishedPetrified 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.