What is the standard for diamond countertops

Diamond countertop standards are not uniform. The national standard diamond cutting ratio scale suggests that the table width ratio of 53-66% is the most perfect, and the brightness and fire color of diamonds can achieve a good balance, followed by higher than 66%. The GIA standard diamond cutting ratio scale recommends that the standard round diamond countertop ratio of 53-62% is the best.

Diamond countertop no standard

There is no uniform standard for the size of diamond countertops. According to the national standard diamond cutting ratio grading table, the suggestions given above are: when the table width ratio is between 53-66%, it can well balance the brightness and fire color of diamonds.

When the table aspect ratio is higher than 66%, the brightness of the diamond will increase, but the fire color will decrease. When the table top is further reduced, the fire color of the diamond will increase, but the brightness will decrease. Therefore, the table aspect ratio of diamonds is the most perfect between 53-66%.

According to the GIA standard diamond cut ratio grading table, the suggestion given above is: the countertop ratio of standard round diamonds is between 53-62%, which is the best. In addition, the shape of the diamond is different, and the countertop ratio also has different selection criteria. For example, the best countertop ratio of heart-shaped diamonds is 53-58%.