Concept

Hearts and arrows

Summary
Hearts and Arrows (H&A) diamonds are precision-cut variations of the traditional 57 faceted round brilliant cut. They are cut to "ideal" proportions with good optical symmetry, polish and a specific faceting pattern. When all these factors are present, the result is a repeatable, near perfect pattern of eight symmetrical arrows in the face-up position of the stone (called 'crown') and eight symmetrical hearts when viewed in the table-down position (called 'pavilion'). Design factors The original Hearts and Arrows were diamonds that surfaced in the mid 1980s in Japan that embodied three important design factors. The first of these factors was that they were cut to what is known in the diamond industry as "ideal proportions," i.e. very close to those summarized by Marcel Tolkowsky in his 1919 book, Diamond Design. Second, they were cut with very good physical and optical symmetry so that they would garner the grade of "Excellent" in the system used by Japanese laboratories. The
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