The Four C's
INTRODUCTION TO THE 4C's
The quality and value of diamonds are usually measured by the "4 C’s"
Colour, Clarity, Carat weight, Cut.
The weight measurement used for diamond is called "carat".
One carat = 200 milligrams.
Diamonds are sold by weight not by size.
Refers to the body colour of the diamond. The absence of colour is most valuable.
Refers to the purity of the diamond crystal. Most diamonds will have some inclusions and irregularities in their crystal structure.
Sometimes called "Make" refers to the:
Colour and Clarity are graded, based on standards and systems widely accepted by the diamond and jewellery trade.
Evaluation of Cut is much more complex. There is no widely recognized cut grading system that can be used to objectively compare diamonds for quality of cut.
The Antwerp Ideal is the Round Brilliant Cut Diamond that is recognized to have EXACTING PROPORTIONS, ABSOLUTE SYMMETRY and THE HIGHEST QUALITY OF POLISHING.