Carat Weight
Carat weight is the standard mass unit for diamonds and other gemstones. The word “carat” comes from the old Greek word for the seed of a carob tree, “kerátion” (κερατιον). It is important to note the difference between Carat – denoting the weight of gemstones; and Karat – denoting the purity of gold alloys.
One metric carat is equal to 200 mg (0.2 g or 0.007055 oz.). In order to improve accuracy, we divide the carat to 100 points. For example, a diamond of 55 points weighs 0.55 carats.

The three remaining C’s evaluate the diamond’s ability to transmit light.

  1. Color evaluates the light the diamond passes or blocks.
  2. Clarity measures how many flaws are blocking the rays of light as they pass through the diamond.
  3. Cut identifies how close the cut of the diamond is to the ideal proportions. The ideal cut proportions allow the stone to reflect and break the rays of light.


Learn more
4C's Carat Weight Color Clarity Cut
Finish Polish Symmetry
Further assessments Shape Treatments Fluorescence