Crazy Lace Agate is a popular that is very popular with jewelers and cut stones sell quickly. It has a widely varied structure and coloring. The wild patterns are the result of a replacement of dogtooth calcite by agate.
Agate is a form of microcrystalline quartz. It is usually formed in nodules and has transparent, or translucent portions. As with all of the other species in the quartz family, agate takes a high polish with cerium oxide.