Four Treasures Reference Database
Record No. 28351
Seventeenth Annual Sinkankas Symposium • Agate & Chalcedony
Conference Proceedings
Various Authors (2019) Seventeenth Annual Sinkankas Symposium • Agate & Chalcedony. John Sinkankas Symposium, 24 April 2021, Carlsbad, CA: Gemological Society of San Diego/Gemological Institute of America, 140 pp..
ISBN/ISSN: 9780990000000 | Sinkankas/Born No.: NIS | RWHL*
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gems, chalcedony, agate, quartz,
The theme of the 17th Annual Sinkankas Symposium was Agate and Chalcedony, presented in a virtual format in 2021.