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Crazy Lace Agate Rough from Mexico - $9.50/lb
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.
As with all of the other species in the quartz family, agate takes a high polish with cerium oxide, but also takes a fine polish with tin oxide and diamond. Mohs hardness 7.