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C

Carat Weight
A metric carat, which equals 0.2 gram, is the standard unit of weight for diamonds and most other gems. If other factors are equal, the more a stone weighs, the more valuable it is.

Certified Diamond
A diamond with a grading certificate from an independently recognised grading laboratory such as HRD or DCLA giving an unbiased and objective evaluation of a diamond.

Channel Setting
Popular for mounting rows of small, uniformly sized stones, this setting technique uses two strips of metal to hold the stones at the sides. Used for round, baguette and square-cut stones, the channel setting resembles a railway track with the diamonds in the centre.

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