Carat weight can vary in its appearance depending on the diamond shape, whether it's round brilliant, princess, pear, oval, cushion, marquise, emerald, radiant, or heart-shaped. Notably, a diamond's carat weight doesn't always correspond directly to its size. For instance, a diamond with a higher carat weight may not necessarily appear larger, especially if it's cut deeper compared to another diamond of the same weight. It's essential to understand that carat weight doesn't solely determine the size of a diamond.
Viewed in isolation, a higher carat weight does not necessarily equate to a superior diamond. The value of a diamond is influenced by factors beyond carat weight, such as clarity, color, and cut. For instance, two diamonds weighing one carat each can differ significantly in price based on their clarity, color, and cut characteristics. It's important to recognize that rarity and quality play integral roles in determining the value of a diamond. Hence, large diamonds of exceptional quality are indeed rare and highly sought after.