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Author Archives: dcgiaorg
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
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
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.
Posted in Meeting Archives
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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
Posted in Meeting Archives
Tagged Education, gia, John Koivula, Synthetic Gemstones, Treated Gemstones
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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
Posted in Meeting Archives
Tagged Alexandrite, Color Change Gems, Evan Caplan, Rare Gems
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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
Posted in Meeting Archives
Tagged Blood Diamonds, Kimberley Process, US KP Authority, World Diamond Council
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In Memory of Frederick N. Ward GG (GIA)
RIP – July 16, 1935 – July 19, 2016 Fred was a loyal DCGIA member, prolific photographer, author and great friend to us all! Some of you may remember Fred as a world-renowned photographer, author, gem dealer, gemologist and a … Continue reading
Posted in Meeting Archives
Tagged Colombian Emeralds, Fred Ward, Gemstones, Jade, Opals, Pearls, Phenomenal Gems, Rubies, Sapphires
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Precious Heirlooms by Denise Nelson GG (GIA)
Precious Heirlooms – A voice from the past & possibly into the future… Denise took us on a walk through history both personal and global as she melded her gemology and genealogy back grounds into a wonderful discussion of what … Continue reading
Tiny Jewel Box DC Job Posting
Master Goldsmith wanted for fabrication and repair of high-end, fine jewelry including, but not limited to: rings, earrings, bracelets, pendants, and brooches. Small shop environment with a manager and three other jewelers including this position. Production environment with a constant flow of … Continue reading
Natural vs. Enhanced Lapidary Gem Materials by Helen Serras-Herman
Helen compared natural gem materials against the simulants available in today’s market. She provided slides of Sonora Chrysocolla, Turquoise, Lapis, Azurite with Malachite, and natural drusy gemstones alongside simulants made to imitate these natural materials. The term “simulants” refers to … Continue reading
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