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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 »

www.reference.com Beauty & Fashion Jewelry & Watches Precious Metals & Gems

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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Diamond transparency, also called diaphaneity or pellucidity, is a physical property of a diamond that identifies the amount of light that can pass through the stone. The transparency level of diamonds varies among stone... More »

You can tell whether a diamond is real or fake by looking at certain details of the diamond, such as presence of imperfections, the shape of the edges and the stone’s refractivity. Other tests include the "fog test" and ... More »

www.reference.com Beauty & Fashion Jewelry & Watches Precious Metals & Gems

Scratching another stone with a suspect diamond is an excellent test of authenticity. Scratching determines the hardness of the stone, which is a key identifying characteristic for diamonds. More »

To identify if a diamond is real or not, first look at the stone through a magnifying glass, called a loupe, for any imperfections in the stone. Next, check the stone's edges to determine if they are sharp or smooth. More »