CARAT

CARAT is a unit of measurement for expressing the weight of diamonds and precious stones. Its abbreviation is ct. Carat weight is one of the most important characteristic in determining the value of a diamond. One carat is equal to 0.2 grams, 200 milligrams and can be divided into 100 points. Diamonds weighing less than one carat can be expressed in points, for a diamond of 0.55 carat we will speak of a “55 points”.
1 carat = 0.2 g = 200 mg = 100 points.
The value of a lab grown diamond increases exponentially with its weight; thus, a 3 carat diamond is worth more than three diamonds, of equal quality, of 1 carat. This explains the weight thresholds beyond which the price of diamonds increases significantly. 0.50ct, 1ct, 1.50ct, 2cts, so a 0.97ct diamond is significantly cheaper than a 1 carat diamond; Lab grown diamonds of different shapes such as rectangle, square or oval can be visually larger or smaller for the same carat weight.

The little history of the carat:
Carob seeds are the source of carat. Indeed, they have the particularity of having a very constant weight, of approximately 0.197 grams and were used very early as a unit of weight. In 1907, the metric carat of 0.2 grams was adopted and is universally used today.