Category Archives: Meeting Archives

The Latest on Synthetic Diamonds | Dr. James Shigley | GIA at JCK

DCGIA thanks GIA for sharing these very informative videos! Video #1 – Dr. Smith shares what he has learned from exceptional diamonds, such as the Cullinan and Koh-I-Noor, that formed beneath the surface of the Earth. Smith, the researcher who … Continue reading

Posted in Meeting Archives | Tagged , | Leave a comment

Museum Field Trip at Hillwood Museum

Thirty six (36) DCGIA members and guests enjoyed a tour of the “Spectacular Gems and Jewelry” which was Marjorie Merriweather Post’s jewel collection on display at Hillwood Museum in DC. The tour featured an introduction to the collection by Angie Dodson, Director … Continue reading

Posted in Meeting Archives | Tagged , , , , , , | Leave a comment

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

Posted in Meeting Archives | Tagged , | 3 Comments

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

Posted in Meeting Archives | Tagged | Leave a comment

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

Posted in Meeting Archives | Tagged , , , | Leave a comment

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 | Leave a comment

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 , , , , | Leave a comment