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The flat faces of a piece of shale could be quite smooth, but the broken edges can be quite rough.
You can buy one or you can get a jewelery piece. Or you can go on a hunt for one.
during heat prusure and time it changers from quartz to smoky quartz
Quartz is a mineral not a rock. Fossils can be found associated with quartz in sedimentary rock not inside the quartz.
quartz qatar quasar