US Patent Issued to Gemological Institute of America Inc. (GIA) on Jan. 27 for "Fluorescence imaging of gemstone on transparent stage" (New Jersey Inventors)

ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,535,430, issued on Jan. 27, was assigned to Gemological Institute of America Inc. (GIA) (Carlsbad, Calif.).

"Fluorescence imaging of gemstone on transparent stage" was invented by Tsung-Han Tsai (Little Ferry, N.J.) and Wuyi Wang (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 fluorescence image capturing of a gemstone, such as a diamond placed on a flat stage. Some examples utilize a setup that both sends light and captures the image from the table side of the gemstone by passing ultraviolet (UV) light between 10 nm and 400 nm to the gemstone and capturing the excited fluorescence image f...