Beckett Rock&Gem - May 2016
- THE COPPER SULFIDES Chalcocite, bornite and covellite By Bob Jones,
- CHINA’S AGATE DEPOSITS An exclusive insight into the agate novelties from Middle Kingdom. By Joshua Ritter,
- GOLDFIELD’S GEMS Collect chalcedony at a venerable Nevada site. By Thomas Farley, and more......
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