Comprehensive Diamond Education
Diamonds can be cut in many shapes.
A chemically pure and structurally perfect diamond has no hue, and consequently, a higher value.
The GIA Color Grading System measures the degree of colorlessness by comparing a stone, under controlled lighting and precise viewing conditions, to masterstones of established color value.
Evaluating diamond clarity involves determining the number, size, relief, nature, and position of these characteristics, as well as how these affect the overall appearance of the stone. While no diamond is perfectly pure, the closer it comes, the higher its value.
A metric "carat" is defined as 200 milligrams. All else being equal, diamond price increases with carat weight, because larger diamonds are more rare and more desirable. But two diamonds of equal carat weight can have very different values (and prices) depending on three other factors withing the 4Cs: color, clarity and cut.
Anatomy & Cut Grade
The design and craftsmanship of the diamond considers weight ratio, the diamond's girdle thickness, the symmetry of its facet arrangement, and the quality of polish on those facets.
Cut is oftentimes confused with the shape of the diamond.