The 4 C’s of Diamonds
The four factors that influence the value of a diamond:
G.I.A. – Gemological Institute of America – the leading independent Gemological Laboratory in the U.S.A.
E.G.L. – European Gemological Laboratory – the leading independent Gemological Laboratory in the world.
Clarity refers to the absence of inclusions and blemishes. The GIA Clarity contains 11 grades, with most diamonds falling into the VS(very slightly included) or SI (slightly included) categories.
Carat weight is the measurement of how much a diamond weighs. All else being equal, diamond price increases with diamond carat weight, because larger diamonds are more rare and more desirable.
Cut is the factor that fuels a diamond’s fire, sparkle and brilliance. The GIA Cut Scale ranges from Excellent to Poor. The cut is crucial to the stone’s final beauty and value.
The less color in a diamond, the higher its value. The GIA Color Scale begins with the letter D, representing colorless, and continues with increasing presence of color to the letter Z.