A diamond described as one carat refers to its weight, not its physical size. One carat is equal to 200 milligrams, or 0.2 grams. The appearance of a diamond weighing one carat can vary significantly depending on its cut, clarity, and shape. For example, a poorly cut one-carat diamond may appear smaller than a well-cut diamond of the same weight because the light is not reflected optimally, causing it to lose brilliance.
Understanding the carat weight of a diamond is crucial for determining its value and making informed purchasing decisions. Historically, carat weight has been a primary factor in establishing a diamond’s worth. However, other characteristics, such as cut, clarity, and color, collectively known as the “4Cs,” significantly influence a diamond’s overall desirability and price. Ignoring these factors can lead to an inaccurate assessment of its true value.