Enter the total cost of the diamond and the total number of carats into the calculator to determine the diamond cost per carat.

Diamond Cost Per Carat Formula

The following equation is used to calculate the Diamond Cost Per Carat.


  • Where DCPC is the diamond cost per carat ($/carat)
  • TDC is the total diamond cost

What is the Diamond Cost Per Carat?

The average price of a .5 carat diamond is $1,600. The average price of a 1 carat diamond is $6,600. The average price of a 2 carat diamond is $29,000.

A carat is the measure of weight for diamonds and other gemstones. One carat is equal to 0.2 grams, or 200 milligrams, and there are 5 carats in 1 gram.

Many factors affect the price of a diamond. The 4 Cs (Cut, Color, Clarity and Carat weight) are the major determining factors of a diamond’s value and therefore its price.

Cut refers to the precision of the cut of the diamond.

Color refers to the true color of the diamond.

Clarity refers to how free the diamond is from obstructions.

Carat weight refers to the weight of the diamond.