Wedding Jewellery

What can change the price of two diamonds with the same carat weight?

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Diamonds of the same carat weight can differ in price because colour, clarity, cut, origin category and other characteristics also matter.

Compare written grading information rather than assuming equal weight means equal quality. Check whether each stone is natural or laboratory-grown, what treatments are disclosed and which laboratory issued the report. The setting and retail terms can add further differences. A grading report helps explain characteristics; it does not fix a universal selling price or guarantee what another buyer will later pay.

Evidence

Sources used

Expert Guidance · Live source

The 4Cs of Diamond Quality

Gemological Institute of America

Colour, clarity, cut and carat weight; no fixed current prices are quoted.

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Expert Guidance · Live source

GIA 4Cs: Carat Weight

Gemological Institute of America

Metric carat weight, its distinction from gold karat, and the limits of weight-only comparisons.

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