The Carat is a measurement of how much a diamond weighs. Each Carat is divided into 100 “points”. For example a half-Carat stone is considered a “50 point diamond”. All else being equal, diamond price increases with Carat weight because larger diamonds are more rare, and thus harder to source.
When looking for a diamond, Carat should be used as a guideline but not the determining factor in your selection. Carat is not necessarily the best indication of how large a stone will appear, rather the measurements of the diamond are a more important reflection of “size”.
The Carat selection for your diamond purchase will generally be determined by your budget, so it’s best to set parameters for your price range, assess a range of qualities (Color/Clarity), and then find your preferred balance between size (Carat) and quality (Color/Clarity/Cut).
The Cut is comprised of several measurements of a diamond’s proportions, arrangement and alignment of the facets, and quality of the polish, which all determine how the facets interact with light.
A diamond’s Color grade refers to the presence or lack of tint in the diamond. Generally referring to a yellow tint.
A diamond’s Clarity grade is based on the number, size, and location of the imperfections that naturally occur, and how easy they are to see.