The diamond ring can be checked from the diamond certificate, the inner wall of the diamond ring, or with a precision electronic scale. The diamond certificate will have the 4C standard of the diamond ring diamond, one of which is the diamond weight; The inner wall of the diamond ring will generally have the words D0.5ctd0.1ct, which is the weight of the main drill and the auxiliary drill of the diamond ring; Sophisticated electronic scales can also weigh diamonds.
