LAS VEGAS, Nev., June 14, 2019 (SEND2PRESS NEWSWIRE) — The American Gem Society (AGS) is now accepting Requests for Proposals (RFPs) to present at the annual Conclave in Denver, Colorado, April 27-29, 2020. The AGS is a professional organization awarding credentials for its members, who are held to the highest ethical and professional standards.