|Move your mouse over the different diamond sizes below to get an idea of how each size appears.|
Tips on choosing a diamond size
Diamonds are sold according to weight, which is measured in carats* and points. To illustrate, think of this: when you buy bananas at the grocery store, they are put on a scale and sold to you by weight, and that weight is pounds and ounces. Diamonds are sold the same way; they are put on a scale and sold by weight, but that weight is carats and points.
A carat is subdivided into 100 points, so a diamond weighing 75 points is a â€šÃ„Ã¶âˆšâ€ âˆšâˆ‚Â¬Â¨â€šÃ Ã‡-carat diamond, 33 points is 1/3-carat, 150 points is a 1.5 carat, and so on. Points are not to be confused with facets, however, which are the cut surfaces of the diamond.
Points are measured within ranges, so that a â€šÃ„Ã¶âˆšâ€ âˆšâˆ‚Â¬Â¨â€šÃ Ã‡ carat diamond may be between 69 and 82 points and still be considered a â€šÃ„Ã¶âˆšâ€ âˆšâˆ‚Â¬Â¨â€šÃ Ã‡ carat. Note the table below.
|Fraction||Points||Approximate mm width
||=||.23 - .28
|1/3 carat||=||.29 - .36||4.4|
|3/8 carat||=||.37 - .44||4.8|
|1/2 carat||=||.45 - .58||5.2|
|5/8 carat||=||.59 - .68||5.5|
|3/4 carat||=||.69 - .82||5.8|
|7/8 carat||=||.83 - .94||6.2|
|1.0 carat||=||.95 - 1.05||6.5|
Diamonds are most accurately weighed when they are not mounted in a setting. In fact, most gemological laboratories will only grade â€šÃ„Ã¶âˆšâ€ âˆšâˆ‚Â¬Â¨Â¬Ã†looseâ€šÃ„Ã¶âˆšâ€ âˆšâˆ‚â€šÃ Ã¶âˆšÃº diamondsâ€šÃ„Ã¶âˆšâ€ âˆšâˆ‚â€šÃ„Ã¶âˆšÂ¢â€šÃ„Â¢meaning, diamonds that are unmounted. If other factors are equal, the more a stone weighs, the more valuable it will be. Note in the image below that a 2-carat diamond does not appear to be twice the size of a 1-carat diamond when viewed from the top.
Our Take: Deciding on diamond size is really about striking a balance between carat weight and quality. Men, donâ€šÃ„Ã¶âˆšâ€ âˆšâˆ‚â€šÃ„Ã¶âˆšÂ¢â€šÃ„â€ t get so caught up in the technical aspects of grading that you lose sight of the romance surrounding this purchase. Our 30 years of experience in the jewelry business has taught us that nearly 100% of women would rather have a 1- carat diamond of good quality, than a â€šÃ¢Ã âˆšâ‰ Â¬Â¨Â¬Â© carat diamond of excellent quality. Selecting a diamond in the near colorless range (G-J), and SI1 or SI2 clarity, would allow you to get a larger diamond that is still beautiful. Diamonds within these ranges are considered to be the best value, and are the most sought after by consumers.
*When spelled with a â€šÃ„Ã¶âˆšâ€ âˆšâˆ‚Â¬Â¨Â¬Ã†câ€šÃ„Ã¶âˆšâ€ âˆšâˆ‚â€šÃ Ã¶âˆšÃº, carat is a unit of weight. When spelled with a â€šÃ„Ã¶âˆšâ€ âˆšâˆ‚Â¬Â¨Â¬Ã†Kâ€šÃ„Ã¶âˆšâ€ âˆšâˆ‚â€šÃ Ã¶âˆšÃº, karat refers to purity of gold.