Single crystal diamond material, Dan Jing diamond chips and perforating tools

In single crystal diamond material, the concentration of the non-substitutional nitrogen atoms of 200ppm or less, the concentration of substitutional nitrogen atoms lower than the concentration of the non-substitutional nitrogen atom, and the single crystal diamond material having an off angle of 20 ° or less the main surface of the crystal growth. In Dan Jing diamond chips, the concentration of the non-substitutional nitrogen atom may be 200ppm or less, the concentration of substitutional nitrogen atoms may be lower than the concentration of the non-substitutional nitrogen atom, and the chip may have a Dan Jing diamond of declination the main surface of 20 ° or less. An apertured tool, wire drawing die comprising Dan Jing diamond, wherein the Dan Jing diamond drawing die, the concentration of the non-substitutional nitrogen atoms of 200ppm or less, the concentration of substitutional nitrogen atoms is less than the non-substitutional nitrogen atom the concentration of the Dan Jing and the diamond wire drawing die having a low index plane of -5 or more and 5 or less represented by an integer Miller indices, the low-index surface perpendicular with respect to the drawing hole orientation angle of 20 the following.