Of the 4C's, carat weight is the simplest factor used to determine the value of a diamond. As with all precisions gem the weight of a diamond is expressed in carats. One carat equals one-fifth of a gram or 1/142 of an ounce. Once carat is divided into 100 points so a diamond weighting 3/4 carat has 75 points or .75 carats.

Compared to colorless diamonds it is more difficult to find a large fancy diamonds. As it tends to be smaller stones and usually weighs less than a carat. Larger fancy diamonds are rarer than "white" diamond. Therefore, they are valuable. The larger the size, the more expensive the item is. No matter how small it is, it still can display beautiful, intense colors if they are well-cut.

Weight (Carats)
0.10
0.15
0.20
0.25
0.30
0.40
0.50
0.60
0.70
0.80
0.90
Diameter (Millimetres)
3.0
3.4
3.8
4.2
4.4
4.8
5.2
5.5
5.8
6.1
6.3

Weight(Carats)
1.00
2.00
3.00
4.00
5.00
6.00
7.00
8.00
9.00
10.00
Diameter (Millimetres)
6.5
8.2
9.4
10.4
11.2
11.9
12.2
12.5
13.1
13.6

Fancy color diamonds are among the rarest and most beautiful gemstones.
They are, like orchids, true treasures of nature!