The weight or size of a diamond is measured in carats. A one-carat stone is equal in weight to one hundred smaller units called points. Carat weight is the most obvious factor in determining a diamond’s value, depending on the quality of its cut, clarity and color. Be aware that the price of a stone may jump after certain weight thresholds (usually at quarter-carat marks, such as .50 of .75 points.)
When considering the best carat weight, take into account her taste and style, the size of her finger, the size of your setting and your budget. For ideas and suggestions on how to choose the right engagement ring, read our Engagement Ring Guide.
In short, The “carat” is a unit of measurement used to weigh diamonds. Although a higher carat weight may increase its rarity and value, the cut color and clarity of the diamond greatly influence the price. Small stones can be more expensive than larger stones if the other 3 C’s, color, cut and clarity, rate highly. For more information read our education on diamond cut and clarity.
Diamonds on Fifth Recommendations
Apparent diamond size varies depending on the carat weight and the proportioning of the cut. A 1.00ct stone that is cut a little too deep might actually be smaller looking than a .90 ct stone that is well proportioned. Also, at certain levels, per carat prices increase substantially. By staying just under these so called magic marks, it is sometimes possible to get real price savings.. For instance, a well cut stone of .45 ct. might be quite less expensive than the same quality .50ct.. yet appear almost the same. The important magic marks are .50ct., .70ct, 1.00ct,1.25ct, 1.50ct, 2.00ct, 3.00ct, 5.00ct.
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