====== Carat ======
The term **carat** is used in two completely different meanings. Firstly, as a unit of weight of precious stones, but with the second it denominates the precious metal content (fineness) of alloys, mostly [[gold]] alloys. (Here the correct spelling is **karat** or **kt.**).

  *As a unit of weight for gemstones applies 
    *1 carat = 0.2 g (200 mg), 
    *1 gram = 5 kt.

  *For precious metals, the number of carats (or karats) indicates the amount of a precious metal in [[gold]] alloys with respect to 24 parts. 

Example 18-karat gold is 75% [[gold]] (and is therefore called Gold 750).


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