Refers to a diamond’s weight. “One carat equals 0.200 grams or 1/5 gram and is subdivided into 100 points,” according to the American Gem Society. The more carats a diamond possesses, the more it will cost since larger diamonds are rarer. However, the cut, color and clarity of the diamond can affect the weight and value of a diamond.
The 5th C, also known as Certification, could be the most important when making your diamond investment. It should be a non-bias report from a grading lab providing important information about the 4 C's of the diamond. Note, that Certification is different than an Appraisal. An Appraisal assigns a monetary value to your diamond or piece of jewelry, which will be needed for insurance purposes.