Category Archives: Meeting Archives

Pearls, Questions and Answers by Teresa Tkacik, M.S.N., F.N.P.C.

Teresa provided a very informative history of pearls, how pearls are cultured, the characteristic of pearls, and Faux pearls, which included a hands on demonstration of how to evaluate pearls. Presentation copy Recommended reading: Tears of the Moon by Robert … Continue reading

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DCGIA 2017 Tucson Report

Thanks go out to all the speakers, members and guests who made this evening enjoyable and informative. Courtland Lee, DCGIA’s resident Geologist and Miner, was a vendor at the 2017 Tucson International Gem Show.  Courtland discussed the wonderful array of … Continue reading

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The Art of Gem Cutting by Thomas Trozzo

DCGIA Thanks Tom Trozzo for sharing a wealth of information and his award winning gemstones with our members and guests. Continue reading

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Gem, Lapidary and Mineral Society of Washington, DC. Auction

Sunday, October 30  http://www.glmsdc.org/ Preview & Artist’s Sale – Noon to 2 pm  –  LIVE Auction – 2 to 5 pm Auction Site:  Bethesda Woman’s Club, 5500 Sonoma Road,  Bethesda, MD 20817 Free parking at rear of building and on side streets.

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Treatments and Synthetics: A Visual Review by John Koivula

 John Koivula an Analytical Microscopist at the Gemological Institute of America shared a visual review of slides identifying common features for synthetic and treated rubies, sapphires, emeralds, diamonds, chrysoberyl, opal, spinel, quartz, jade, and corundum. The majority of characteristics seen … Continue reading

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The Magic of Alexandrite by Evan Caplan

Los Angeles gem dealer with a specialty for rare gemstones, Evan Caplan shared his passion for Alexandrite with the DCGIA Members. Alexandrite one of the birthstones for June, is a very rare color-change variety of the mineral chrysoberyl. Green in daylight and Red … Continue reading

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Kimberly Process Review by Patricia Syvrud

The DCGIA chapter members heard from Patricia Syvrud, Executive Director of the World Diamond Council. The diamond industry is very unique and special, but it’s not alone in how consumers focus on its products. There are plenty other industries such … Continue reading

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