US Patent Issued to Gemological Appraisal Association on May 19 for "Gemstone centering device" (New York Inventors)

ALEXANDRIA, Va., May 19 -- United States Patent no. 12,629,799, issued on May 19, was assigned to Gemological Appraisal Association Inc. (New York).

"Gemstone centering device" was invented by Angelo W. Palmieri (New York), James Gleason (New York) and Donald A. Palmieri (New York).

According to the abstract* released by the U.S. Patent & Trademark Office: "A gemstone centering device includes a platform for receiving the gemstone and two pairs of arms. The pair of first arms arranged opposite one another above the platform and movable along a first axis. The pair of first arms move between a retracted position and an extended position in which a distance between first gem contacting surfaces of the pair of first arms is less than in the ...