SINGLE CRYSTAL DIAMOND AND DIAMOND TOOL

摘要

A single crystal diamond (10) has a surface (10a). In the single crystal diamond (10), a measurement region (20) is defined in the surface (20a), the measurement region (20) includes a portion exhibiting a transmittance that is highest in the single crystal diamond (10) and a portion exhibiting a transmittance that is lowest in the single crystal diamond (10), the measurement region (20) has a plurality of square regions (20a) that are continuously arranged and each have a side having a length of 0.2 mm, and an average value of transmittances in each of the plurality of square regions (20a) is measured, wherein assuming that the average value of the transmittances in one square region (20a) is defined as T 1 and the average value of the transmittances in another square region (20a) adjacent to the one square region (20a) is defined as T 2 , a relation of ((T 1 - T 2 )/((T 1 + T 2 ) /2) x 100)/0.2 ‰¤ 20 (%/mm) is satisfied throughout the measurement region (20).