Of the four C's, carat weight is the simplest factor to determine the value of a diamond. As with all precious gems, the weight of a diamond is expressed in carats. One carat equals one-fifth of a gram, or 1/142 of an ounce. One carat is also divided into 100 "points", so a diamond weighing 3/4 carat may be described as weighing 75 points or .75 carats.

1 Carat*	2 Carats*	3 Carats*	4 Carats*	5 Carats*

Diamonds are accurately weighed when they are not mounted. As diamonds increase in size, their price per carat usually increases exponentially. A two-carat diamond will be more than double the price of a one-carat diamond of the same quality.

*Depending on the size of your screen, diamonds may not be actual size