ALEXANDRIA, Va., Jan. 13 -- United States Patent no. 12,520,916, issued on Jan. 13, was assigned to Leszek Tomasik (Mount Prospect, Ill.).
"Shallow depth cut diamonds" was invented by Leszek Tomasik (Mount Prospect, Ill.).
According to the abstract* released by the U.S. Patent & Trademark Office: "The invention is directed to shallow pavilion, cut diamonds having excellent optical characteristics. The pavilion surface includes a plurality of substantially planar main pavilion facets, each of which extend from the girdle to a pointed culet defining the bottom most portion of the cut diamond. The crown angle is in the range of between about 29 degrees to about 36 degrees, and the pavilion angle is in the range of between about 15 degrees an...