Diamond Grading

Carat

A diamond’s weight is measured in carats. There are five carats in a gram, and 100 points in each carat. For example, a 50-point diamond is the same as a half-carat. In general, larger diamonds are more rare and valuable. But size does not determine a diamond’s beauty and brilliance. Two stones of the same carat weight can have very different values, depending on their cut, color and clarity.

Clarity

The more clear a diamond is, the more rare it is. Most diamonds contain natural 'inclusions' that look like tiny crystals. These are the diamond’s birthmarks, making each stone unique. The number, size and position of these inclusions affects the value. The Gemological Institute of America (GIA) clarity scale ranges from Fl (flawless) to I3 (many inclusions visible to the naked eye).

Colour

Diamonds are graded on the GIA color scale from D (colorless) to Z (light yellow). At either end of the scale, diamonds are very costly because of their rarity, although not necessarily their beauty. At Key Largo, you can choose from a wide range of diamond colors.

Cut

Nothing is more important to the brilliance and fire of a diamond than its cut. A well proportioned diamond reflects light from one facet to another and through the top of the stone. If the pavilion angle is cut too deep, your diamond will look dark. If it is too shallow, your diamond will look watery. Only a skilled master craftsman can cut a diamond with pinpoint precision to release its true brilliance.