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Individual diamond prices vary and depend on the characteristics of each stone. Established in the 1940s, the grading system currently in use weighs each stone's color, clarity, cut and carat weight in determining its pr... More »

The average cost of a half-carat diamond is between $1,500 and $2,500, as of September 2014. While size is an important factor, cut, color and clarity also play a role when pricing diamonds. More »

Carat TW stands for carat total weight. It is the combined weight of all the gemstones in a piece of jewelry. More »

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