Colour
The most common diamond colour is yellow and brown. These diamonds are valued by how colourless they are. The less the colour, the more the value.
Diamond colour is graded according to a grading scale. Most diamonds have a slight hint of yellow and generally the diamond colour scale is based on the amount of yellow present in a diamond. World widely accepted colour grading system in this industry is the scale which begins with the grade D (colourless) and continues with increasing presence of colour, to grade Z. Even slight colour differences will make a very big difference in diamond quality and price.
It is extremely difficult to see the colour differences within diamonds. It requires certain skill, controlled lighting, and definite viewing condition.
Clarity
The diamond's clarity is a description of its internal purity due to its creation process. With fewer characteristic presence within the stone, the diamond is more rare and posses a higher value.
Refer to the international applied clarity grading scale, diamonds are given a clarity grade that ranges from Flawless (FL) to diamonds with more prominent character inside the diamond (I3). All diamonds are systematically graded and plotted under 10X magnification.
Cut
Most diamonds are cut to round shape with 57/58 facets. An excellent cut determines the diamond’s maximization and balance of it’s brilliance, fire, and scintillation.
It is the work of a master cutter that allows the diamond to be cut in such a way as to permit the maximum amount of light to be reflected through the diamond. It is the cut that enables a diamond to make the best use of light
Carat Weight
Carat is the standard weight measuring unit for diamonds and other gemstones. It takes its name from the carob seed. Because these small seeds had a fairly uniform weight, early gem traders used them as counterweights in their balance scales.
A carat is equal to 0.2 grams. Within the diamond trade, fractions of a carat are referred to as points. One carat is divided into 100 points, each point is 1/100th of a carat. A 10-point diamond weighs 1/10th of a carat, and a 50-point stone weighs one-half carat.
