Which statement about carat is true?

• A. A carat measures color.
• B. A carat is a unit of weight equal to 0.2 grams.
• C. A carat is a measure of cut quality.
• D. A carat is a measure of clarity.

Answer: (B)

Carat describes the weight of a gemstone. It is not a measure of color, cut quality, or clarity. One carat equals 0.2 grams, and weights are often expressed in carats with decimals or in points (one point = 0.01 carat). Because price is heavily influenced by weight, carat is a key factor in value, distinct from color, cut, and clarity, which use their own grading systems. For clarity, “karat” with a k refers to gold purity, not gemstone weight.