Thirteenth Annual Sinkankas Symposium – Opal

  – OPAL

Named for one of the most distinguished and influential figures in gemology and mineralogy, the Sinkankas Symposium is an annual one-day event featuring presentations by noted specialists working in diverse gem-related disciplines or occupations.  The theme of the Thirteenth Annual Sinkankas Symposium is opal.

The Sinkankas Symposium has been described as the most important gemological conference in North America by respected authorities on gemstones.  Organized by Roger Merk, the annual event is co-sponsored by the Gemological Society of San Diego and GIA (Gemological Institute of America), which has provided the Symposium venue for the past 12 years.  Bill Larson has been a generous supporter of the event since its inception.


Saturday, April 18, 2011

GIA (Gemological Institute of America)
World Headquarters and The Robert Mouawad Campus
5345 Armada Drive
Carlsbad, CA 92008



Recognized specialists in fields ranging from geology and mineralogy to history, treatment, cutting, collecting and selling will make presentations on Opal.

Dr. Raquel Alonso-Perez – Kunz Opals in the Harvard Museum

Dr. Eloise Gaillou &8211; Geology and mineralogy of opal

Andrew Cody – Australian Opals, especially fossilized opals

Alan Hart – Opals in the Natural History Museum, London

Meg Berry – Lapidary tricks in cutting opal

Nathan Renfro – Inclusions in opals –

Dr Renee Newman – Matrix opals and other common opals, Part 1

Helen Serras-Herman – Common opals, Part 2

Jack Hobart – Photographic studies of Mexican opals

Robert Weldon – Photographing opal

Dr Eloise Gaillou and Dr. George R. Rossman – Color in opal

* speakers or topics subject to change without notice



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