This short tutorial explains the 4Cs – cut, colour, clarity, and carat weight – the most important characteristics of buying a diamond.
The most important of the 4Cs is Cut because it has the greatest influence on a diamond’s sparkle.
The second most important of the 4Cs is Colour, which refers to a diamond’s lack of colour. The less colour, the higher the grade.
Often the least important of the 4Cs because the tiny imperfections are often microscopic.
The term Carat actually refers to the diamond’s total weight and not its size.
Each Fancy Shape has different attributes that affect price and quality grade.
Unbiased diamond grading reports are offered with every Blue Nile diamond.
As one of the largest online diamond retailers, Blue Nile offers a huge selection of the world’s finest diamonds, pre-selected for exceptional quality, cut, colour, and clarity based on a standardized grading scale. Each loose diamond is accompanied by a grading report from the GIA, a respected, independent diamond grading lab with extremely stringent grading scales.