The word "carat" is derived from the "carob" bean, which was first used to determine a diamonds weight. Once you've decided what cut, color, and clarity grade you're looking for in a diamond, all is left for you to choose is what carat weight of diamond you can fit within your budget. As you may very well know the larger the diamond the higher the price per carat. This is because larger diamonds are rarer than smaller diamonds and that itself increases the value of a larger diamond. Please keep in mind a larger diamond is not necessarily a beautiful diamond, therefore remember, the carat is not the most important characteristic of a diamond. Other characteristics (C's) of a diamond are just as important to assure a beautiful diamond.
This diagram demonstrates the various sizes of diamonds and how they appear when set in a solitaire setting.
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