Depth share: In attempting to quantify a gem’s proportions, reference is often manufactured to depth share. That is calculated by getting the depth and dividing it by the girdle diameter (or regular diameter, in the case of non-spherical stones). The acceptable array is normally sixty–80%. One more system that’s used https://jaredbcbyt.wonderkingwiki.com/5056568/how_gemstone_grading_system_can_save_you_time_stress_and_money