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A diamond certificate is an identification letter corresponding to a loose diamond that has been thoroughly tested and certified. A typical certificate prepared by a diamond grading laboratory identifies the all-important characteristics of a loose diamond, such as the exact measurements (Depth Percentage, Table percentage, Girdle thickness and Culet size) and the crucial details of its 4 C’s (Cut , Colour, Clarity and Carat weight).

When purchasing a diamond it is highly advisable to ask for a diamond certificate prepared by an independent diamond grading laboratory. Some Jewellery retailers provide their own certificates, which can be somewhat inaccurate as they may contain misleading information in order to boost the credentials of a lower quality diamond.

Diamond certificates guarantee the quality of purchased diamond. At Raffini Jewellers, therefore, we only carry diamonds that are properly certified by reputable diamond grading laboratories, such as: