The size of a diamond is measured in carat weight. One carat is divided into 100 points, so that a diamond of 75 points weighs 0.75 of a carat. Whilst carat weight seems the most obvious factor when assessing the value of a diamond, depending on their respective cut, clarity and colour, two diamonds of equal size can have very different values. Big is not necessarily better-diamonds of high quality can be found in all size ranges. However, one diamond of one carat is usually worth more than two diamonds of 0.50ct.