Triple Excellent

A diamond's cut grade is based on three factors: proportion (shape), polish (polish condition), and symmetry. Triple Excellent diamonds are diamonds that have been cut with the highest degree of precision and have received the highest rating of "Excellent" for all three elements. Because ith is a brand started by an artisan, we do not compromise but use only the finest diamonds cut by the skillful diamond cutters.

Hearts & Arrows

Among round brilliant cut diamonds, those that are finished with a certain level of symmetry show a pattern of eight arrows on the table side and eight heart marks on the culet side when viewed through a special scope. Diamonds that produce this pattern are called "Hearts and Arrows" (H&A), and are one indicator of a diamond cutter’s high level skill.
At ith, we also offer a special diamond called the Perfect H&A (Hearts and Arrows), which is evaluated from our own perspective. H&A is certified by domestic grading organizations in Japan, but there is a wide range of tolerance in the expression of patterns and considerable individual variation.

ith's Conditions of a Perfect H&A Diamond

When looking through a scope, all eight hearts and arrows appear immediately. No matter how many times you look through a scope, there will always be hearts and arrows without missing one piece. The shape of the pattern should be easily identified as hearts and arrows(in the case of arrows, ones with big arrowheads and short shafts will be inspected as a beautiful shape of arrows).