ALEXANDRIA, Va., March 31 -- United States Patent no. 12,590,902, issued on March 31, was assigned to Gemological Institute of America Inc. (GIA) (Carlsbad, Calif.).

"High clarity gemstone facet and internal imaging analysis" was invented by Tsung-Han Tsai (Maywood, N.J.), Hiroshi Takahashi (Morristown, N.J.), Mehdi Toosi (Clifton, N.J.) and Yong Liu (Edison, N.J.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Systems and methods here may be used for a setup of image capturing of a gemstone, such as a diamonds that are of high clarity grades. The present embodiments can provide methods to capture a diamond surface and internal clarity features from a diamond table and through and of other facets. Systems and...