It is impossible to accurately grade diamonds while still in a setting, only estimates and approximations of the 4 C’s are possible. The setting may hide inclusions, mask colour, and make accurate measurements and weighing impossible. You therefore need to have to have the diamonds removed from the setting before submitting them to the DCLA laboratory. Your jeweller will be able to do this for you, it is a quick and relatively inexpensive process.
The Diamond Certification Laboratory of Australia (DCLA)
Buy and sell diamonds with the help of the experts
