Individual diamond prices vary and depend on the characteristics of each stone. Established in the 1940s, the grading system currently in use weighs each stone's color, clarity, cut and carat weight in determining its price.
Although diamonds with various colors are valuable and sought after, the most valuable diamonds are completely colorless. Additionally, a more expensive stone has flawless clarity, or is free of internal and external scratches, flecks and other imperfections. A superior diamond's cut exhibits quality workmanship, with the stone displaying exceptional brilliance, sparkle and fire. And lastly, a pricier gem has a larger size, or carat weight.Learn More
The diameter of a one-carat round or brilliant cut diamond typically measures between 6.4 and 6.5 millimeters. The term carat refers to weight not size, so a one-carat diamond doesn't need to conform to specific measurements.Full Answer >
A 2-carat diamond has a width of 8.2 mm in the round brilliant cut. However, it is important to remember that 2-carat diamonds with different cuts typically have differing size measurements.Full Answer >
The weight of a gemstone is measured by carats. The definition of a carat has changed over time, but the international standard for the weight of 1 carat is 200 milligrams, according to Zales Diamond Store. The diameter of a 1-carat diamond is about 6.5 millimeters.Full Answer >
A diamond of 100 carats or more is not issued a specific term, so it is simply called a diamond. It is, however, common for large diamonds of that size to have individual names, such as the famous 112-carat "Hope Diamond."Full Answer >