Prices for 1 carat round diamonds (2023)

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optical carat

Cutoff-Score

aspect ratio

The length to width ratio is calculated by dividing the widest part of the diamond by the narrowest part. A length to width ratio of 1.00 would make a perfect circle or square. When the ratio exceeds 1, the diamond appears more oval or square. For round diamonds you want a ratio as close to 1.00 as possible and for fancy shapes it really is the preference.

Precio

Karat

The weight of your diamond and the most common measure used to describe the size of the diamond. Our visual carat weight measurement is an even more accurate measure of how large a diamond actually appears based on its surface area expressed in carat weight.

Colour

The GIA grades diamonds on a scale from D (colorless) to Z (light color). StoneAlgo only displays colorless (D - F), nearly colorless (G - J) and K-colored (weak) diamonds. The most common type of color for diamond engagement rings is the H color.

clarity

Clarity grades measure the type, size and location of inclusions on the surface or inside the diamond. The most common clarity grades for engagement rings are VS2 and SI1.

fluorescence

One in three diamonds will show some level of fluorescence when exposed to UV light. In fact, a little fluorescence can be good when buying a nearly colorless (G - J) or weakly colored (K) diamond.

polishing

Once the diamonds are cut into their final shape, they are polished to shine as brightly as possible. Most people choose a very good polish or better.

symmetry

Sometimes diamonds are not cut symmetrically, which can mean that the diamond does not shine to its full potential. We recommend excellent symmetry.

A/W ratio

The ratio is calculated by dividing the length of the diamond by its width. For round diamonds, the ideal A/W ratio is 1.00 to 1.05, while for some fancy shapes it's more a matter of style and preference.

percentage depth

The height of the diamond as a percentage of its width.

table percentage

The width of the table (the flat top of the diamond) as a percentage of the total width of the diamond.

Cutoff-Score

Section

This is the diamond cut quality rating provided by the grading organization for the diamond. While we believe you should always monitor this value, we recommend relying on StoneAlgo's Cut Score as it offers much greater sensitivity.

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