The Quality and Value of a Diamond is determined by the 4 CS.
Diamonds with the highest 4C ratios are the rarest and therefore the most valuable.
The Four C's of Diamonds are:
• Cut • Colour • Clarity • Carat Weight
The Cut Grade measures how the individual proportions combine to effect the beauty of a diamond. Diamonds with a high cut grade will have a high degree of brightness, fire Irainbow colours,) and scintillation (sparkle). High cut grades include "Excellenr and 'Very Good", midrange includes "Good", and the low end includes "Fair" and "Poor".
Excellent + / Very Good
These diamonds will have a high degree of brilliance. fire, and scintillation.
(Quasar Diamond Range)
This grade will generally be a bit darker or lacking scintillastion.
Diamonds in this category lack brightness, fire and scintillation.
Diamonds in this category show very little brightness, fire and scintillation.
Quasar diamonds are graded using the GIA and HRD colour grading scale (D-Z). Most diamonds are colourless to slightly yellow. The highest grade is "D" or colourless (exceptional white +).
All diamonds contain imperfections. The very best, and rarest, clarity is Internally Flawless (IF).
Because many inclusions are not visible to the naked eye, diamonds are graded under lOx magnification.
Diamond Carat Weight
Diamond weight is measured in carats and points. There are 100 points in a carat.
One carat = 0.2grams and one point = 2 milligrams.