Polycrystals are many single crystals that are randomly oriented in the crystal body and have a poor mechanical strength. However, they can be dislodged independently of the grinding process to produce new prisms that continue to work, have good self-polishing properties and give a high degree of coarseness after grinding and polishing.
Generally speaking, the selection of polycrystalline or monocrystalline diamond compound is based on your application. Monocrystalline is recommended if you need high thermal conductivity, high mechanical strength, or need to use heavy cutting tools; polycrystalline is recommended if you need to grind and polish, and want to get a high-quality surface with a lighter cut.
Another explosion method and high temperature and high pressure method to make the difference in as, the explosion method of diamonds because of the instantaneous synthesis method is closer to round, like popcorn; high temperature and high pressure method is a slow long crystal, the crystal structure is more complete, that the explosion method of nano diamonds are directly synthesized belongs to botton up made, high temperature and high pressure method of nanodiamonds are first made into large diamonds and crushed and obtained belongs to top down made, the high temperature and high pressure method is a large diamond, the diamond is made into the top down.
