corundum, synthetic corundum.7, Inamori, Kyocera, gems

Kyocera Corporation of Kyoto, Japan, is currently marketing under the trade name Jnamori" a macro-scopically nat~tral-appearingsemitransparent asteri-ated synthetic ruby. With the exception of obvious internal characteristics and a relatively strong fluo-rescence to ultraviolet radiation, all of the gemologi-cal properties shown by this material are essentially the same cis those encountered in natural star rubies. For the majority of gemologists without access to re-search-grade testing equipment, the internal charac-teristics of l