What is measured in carats of diamonds?

I was google This was, I went to ask.com and not too much wikianswers.com Wikipedia these sites helped me. I need something that wordingwould be understood that one year is 12 years. Im trying to explain my Cusi

Hello! One carat (mass) is the unit weight of gems. This is equivalent to 0.2 grams. Thus, in principle, its weight. Hope this answer your question.

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