Each diamond is unique and expresses its individual characteristics. The quality of a diamond depends on the 4Cs which are carat, clarity, colour and cut. Carat determines the weight of the diamond. The clarity quantifies the amount of enclaves in the stone. The colour indicates the stone colour, whereby a diamond is of high quality if it is whiter/pure. The cut measures how well the stone has been cut in its proportions for optimal colour rendering. Find more detailed information about diamond grades in our 4C’s Guide. For larger diamonds, we recommend using a certified stone that independently confirms the quality.