In nature exists innumerable ground types to drill. Over millions of years , subjected to different pressures and temperatures, rocks have been created having very different chemical, physical and mechanical characteristics.
Tender rocks, such as chalk, tuff, extremely hard marble and rocks such as granite, quartzite must be perforated with tools suited to their characteristics. Moreover, besides what has naturally been created, there are countless man-made materials that must be drilled: concrete, bricks, etc. ... Nexus has developed a complete range of diamond tools suitable for drilling any material and divided into 4 different technologies: impregnated, embedded, PCD and TSD (termostable diamond).
In general, the harder is the material to drill the smaller the cutting edge will be. Below is a table regarding the use of different technologies according to the material to be drilled.