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HRD CERTIFICATE DIAMOND FULL

Grading Inflation and Inconsistency: A research study carried out by Rapaport, the leading diamond market information service, investigated the consistency and accuracy of several leading diamond grading laboratories found problems with HRD.There is a real risk that diamonds will be over graded to encourage the creation of a profitable printed report and certificate. This is problematic for retail buyers because it provides a clear incentive to HRD to offer reports that jewellers will want to pay for.

HRD CERTIFICATE DIAMOND FULL

Only if the report data is seen as beneficial to the jeweller or merchant will a full report be generated at extra cost. This service is inexpensive but does not include a full report. There is one exception: As with some other grading labs, HRD offers a preliminary report for grading. Usually, these services also serve the retail buyer as well.

Preliminary Reports: HRD offers services that meet the needs of diamond dealers and jewellers.

Over grading enables vendors to overvalue diamonds sold to retail buyers. There are serious concerns in some quarters about the accuracy and consistency of HRD gradings with a reported tendency to overgrade diamonds. This measurement is the same at all grading labs. HRD's scale has some different terms to the original devised by the GIA but has the same number of gradations.Ĭarat – is a measure of the weight of a diamond. The scale is the same as the GIA colour grading scale.Ĭlarity – A measure of the degree of flawing of the diamond, both internally and externally.

HRD uses a scale running from D to Z with D being colourless and Z having a visible colour tint.

HRD grades diamonds using the industry-standard 4Cs of Cut, Colour, Clarity and Carat.Ĭut - In the HRD system, Cut is graded from Excellent to Poor with three sub-grades: proportion, polish and symmetry.Ĭolour–Measures the amount of yellow/brown in present in a diamond.