Diamond Knowledge

What is 4C?


We use “Carat” to measure weight of diamonds.  One carat=0. 2 grams in weight.  The carat is divisible into one hundred points.  0.50ct=50 points.  The word, carat, originated in Greek as Carob seed, which was used to measure jewellery and gold throughout history until 1570s, which was used to measure diamond weight. 


GIA Color Scale extends from D (colorless) to Z (light yellow or brown).
Diamonds come in many colors. Diamonds that range from colorless to light yellow and brown fall within the normal color range.  Each letter represents a range of color based on a diamond's tone and saturation.


The GIA Clarity Scale includes eleven clarity grades ranging from Flawless to I3.
Because diamonds form under tremendous heat and pressure.  It is extremely rare to find diamond that lacks any internal and external characteristics.  These characteristics help gemologists separate natural diamonds from synthetics and identify individual stones.  Clarity grades assess the number, size, relief, and position of inclusions and blemishes.



The GIA Cut scale ranges from Excellent to Poor. A polished diamond’s beauty lies in its complex relationship with light. The magnificent display you see is made up of three attributes: Brightness, Fire and Scintillation, the pattern of light and dark and sparkles when it moves. Cut (proportions, symmetry, and polish) is a measure of how a diamond’s facets interact with light.

*source: GIA.edu.com