April 21, 2010
THE SINKANKAS SYMPOSIUM 2010 — GEM FELDSPARSPhotograph by Harold and Erica Van PeltNamed for one of the most distinguished and influential figures in gemology and mineralogy,The Sinkankas Symposium is an annual one-day event featuring presentations b…
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April 21, 2010
THE SINKANKAS SYMPOSIUM 2010 — GEM FELDSPARSPhotograph by Harold and Erica Van PeltNamed for one of the most distinguished and influential figures in gemology and mineralogy,The Sinkankas Symposium is an annual one-day event featuring presentations b…
Read the full article →