The Gemmological Association of Great Britain (Gem-A) is marketing a CD-ROM from the Diamond Trading Company titled “Diamonds: Treatments, Synthetics, and Simulants.” The CD-ROM contains animated graphics, videos, and 250 slides to provide details on the latest gemological research on HPHT (high pressure, high temperature) treatments and synthetics, CVD (chemical vapor deposition) synthetics, fracture filling, and more. The CD is available for $36. For more information, contact Gem-A, 27 Greville St., London, EC1N 8TN; (44-20) 7404 3334, (44-20) 7404 8843, e-mail: gagtl@btinternet.com, www.gem-a.info. In the United States, contact Anne Dale, Director, Gem-A USA, 12 St. Ann Drive, Mandeville, LA 70471; (985) 951-7014, e-mail: annedalejewellers@aol.com.