The term carat dates back to when gemstones were weighed using the carob bean as a counter balance. Unlike colour, clarity and cut, which are the result of visual assessment, carat weight is conclusively determined by weighing the stone on a diamond balance or scale.

Carat weight can be expressed as points, where 1 carat (ct) = 100 points = 0.200 gram

Larger carat weight does not always equate to greater diamond value. The value of a diamond is determined by its rarity and the combination of all four C’s: carat, colour, clarity and cut. Two stones of equal carat weight can have vastly different prices if their colour, clarity or cut differs.

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