is there such a thing as "grams" when selecting a diamond?

[maryo13]

Does/has anyone heard of grams in selecting a diamond...a friend is going to Peru to get her diamond and wondered about that ....seems that the Peruvians grade their diamonds that way and she wondered what it is...

 

[Richard Sherwood]

Grams is a weight measurement. It is related to carat weight in that 1 gram = 5 carats.

Rich, GG
Sarasota Gemological Laboratory

 

[rsilvers]

There are 200 milligrams to a carat. 2 mg to a point.