What is a carat?
  • "Carat Weight" is simply the weight of the diamond.

  •  By definition, 1 carat is exactly 200 milligrams.  Since most diamonds sold in the jewelry industry weigh less than 1 carat, the carat is usually subdivided into "points."  There are 100 points in 1 carat, so that a diamond weighing 3/4 carat would be a "75 point diamond."  In summary:

1 carat = 200 milligrams = 100 points

Why is carat weight important and how it effects the price?
  • Carat is the simplest and most objective of the four C's. A 1.00 Carat diamond weighs 0.2 gm on scales weighs. In the trade we call 1/2ct - 50 points.

  • Naturally more Carat weight means more cost because BIG diamonds are very rare. A diamond of double the weight costs around 4 times more. Add the magic weight idea to rarity: a 1.00ct D color Flawless costs 1.7 times more than a 99 point D Flawless.
     

Carate chart