it is important to determine the purity of the diamond. Check out the manual VVS1 Clarity Diamond
https://madgemstones.com/vvs1-clarity-diamond-is-it-really-worth-the-money/ . Not everyone knows that it is possible to determine the purity of a diamond even by eye, and it is not necessary to be a specialist. It is enough just to carefully examine the stone for the presence and location of foreign inclusions, cracks or other flaws.