Keep the Four Cs in mind when shopping for a diamond, whether for your diamond engagement ring or other diamond jewelry. The GIA's 4Cs of diamonds are diamond clarity grade, cut, color, and carat weight. The diamond-cut indicates how well a diamond is cut; diamond color indicates how white a diamond is, diamond clarity grade indicates how flawless a diamond is, and diamond carat is a simple weight measurement. These four-diamond elements reveal a lot about a diamond's quality and appearance.
To understand the qualities of a round diamond, you only need to look at its 4Cs. However, when shopping for a cushion-cut diamond, there are some additional diamond properties you should be aware of to select a high-quality diamond that you will adore. For example, when choosing a cushion cut diamond, four special considerations must be considered: ratio, depth percentage, table percentage, and faceting.
First, consider the cushion cut diamond length to width ratio. Cushion cut diamonds have different length-to-width ratios than round diamonds, which are always perfectly round. The ratio of a perfectly square cushion cut diamond is 1.00. (though up to 1.05 will look square to the eye). Then, anything greater than 1.10 will appear noticeably rectangular. Although the ratio is a matter of personal preference, it is important to note that not all cushion-cut diamonds have the same ratio.
Then there's the depth percentage and table percentage, both of which are quality concerns. For example, a cushion-cut diamond with an excessive depth or table percentage will sparkle poorly. To avoid this, we recommend selecting a cushion cut diamond with a depth percentage of less than 70% and a table percentage of less than 70%.
Third, there's the issue of facet pattern, which is a personal preference issue. Cushion-cut diamonds can have more facets than brilliant round diamonds, which have a standard number of facets (58). A cushion cut diamond with 58 facets will have the classic "chunky" cushion cut appearance. Cushion-cut diamonds with more facets, arranged in double rows of facets, will have a "crushed ice" appearance. (Note: Technically, the GIA classifies this type of cushion cut diamond as a "modified cushion cut" diamond.) When shopping for a cushion-cut diamond, consider which look you prefer and choose your diamond accordingly.
In addition to these three diamond properties, you should know that one of the four Cs is more important for cushion-cut diamonds. Cushion-cut diamonds have a high color saturation. This is fantastic news if you're looking for a colored cushion-cut diamond or a colorful cushion-cut gemstone. However, you should be cautious if you want a white cushion-cut diamond. Cushion-cut diamonds appear slightly yellower than round diamonds of the same color grade. To avoid getting a cushion-cut diamond that is noticeably yellow, we recommend going with a color grade of H or higher. You might want to go with a white setting (such as white gold or platinum) to make the stone appear whiter and brighter.
As you can see, choosing a cushion-cut diamond necessitates a little more knowledge than choosing a round diamond. However, if you follow our advice above, you should have no trouble finding a stunning cushion-cut diamond that you will adore.