Diamond Grading: The 4 C's
The 4 C's, when referring to diamond value, are color, clarity, carat weight and cut. All four factors are equally important in determining the final cost of a diamond. The criteria for diamond grading, most respected internationally, was developed by the Gemological Institute of America (the G.I.A.). The terminology and systems described on this page, are those of the G.I.A.
Following, is an explanation of these terms.
Carat Weight
Carat is a unit of weight, not size. There are 5 carats in a gram. The weight of a diamond is measured in carats. A carat is divided into 100 parts, called points.
1 carat =1.00 carat=100points
1/2 carat= 0.50 carat= 50 points
1/4 carat=0.25 carat= 25 points
Credit: http://gemologyonline.com/diamondgrading.html
ไม่มีความคิดเห็น:
แสดงความคิดเห็น