To the question of 3D modeling of grains of natural diamond powders

The results of research to establish the most appropriate 3D model of grinding powder’s grains of natural diamond are adjusted. Criterion of adequacy is adopted a maximum precision match experimental and calculated values of control characteristics in various 3D models of grain. The quantitative analysis revealed that the closest analogue of the geometric form of spatially-grain grinding powders natural diamond is extrapolation-affine 3D model.