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Diamond Shape Guide

Diamond Shape Description
Round Brilliant Cut A brilliant cut is a diamond or other gemstone cut in a particular form with numerous facets, so as to have exceptional brilliance. The shape resembles that of a cone, and provides maximized light return through the top of the diamond. Even with modern techniques, the cutting and polishing of a diamond crystal always results in a dramatic loss of weight; rarely is it less than 50%. The round brilliant cut is preferred when the crystal is an octahedron, as often two stones may be cut from one such crystal. Oddly-shaped crystals such as macles are more likely to be cut in a fancy cut—that is, a cut other than the round brilliant—which that particular crystal shape lends itself to. ref: wiki
Princess Cut The princess cut is the second most popular cut shape for diamonds, next to a round brilliant. The face-up shape of the princess cut is square or rectangular, and the profile or side-on shape is similar to that of an inverted pyramid with four beveled sides. The princess cut is a relatively new diamond cut, having been created in the 1960s, and it has gained in popularity in recent years as a more distinctive alternative to the popular round brilliant cut (in which the top of diamond, called the crown, is cut with a round shape and the bottom, called the pavilion, is shaped like a cone). Ref: wiki
Pear Cut One of the most famous pear shaped diamonds is the Sun-Drop Diamond. It was found in South Africa in 2010 within a kimberlite pipe, and tests show that the diamond was formed from 1-3 billion years ago. The pear shape is a combination of the round brilliant and marquise cuts, and usually has a facet brilliant pattern. The unique look of the pear shape helps make it a popular choice for a variety of diamond jewellery. ref: wiki
Oval Cut The oval is a modified brilliant cut diamond; it is seen most frequently cut in the standard 56 facet brilliant pattern. Oval diamonds are another popular choice for engagement rings, and had been created and introduced by Lazare Kaplan way back in the 1960s. ref: wiki
Marquise Cut Marquise or 'navette' diamonds (French for "little boat", as they resemble the hull of a sailboat) are another example of modified brilliants. Usually noted to have 56 facets, the weight of such diamonds is estimated by measuring the length and width of the stone. ref: wiki
Heart Cut A heart cut diamond has romantic symbolism so it is a common gift for Valentine's Day or wedding anniversaries. The stunning look of the heart-shaped diamond helps make it a fantastic choice for a variety of diamond jewellery; it is a brilliant cut which can be modified so that the number of pavilion main facets may be 6, 7, or 8. ref: wiki
Emerald Cut Emerald cut diamonds are perfect for use in engagement rings, as well as other jewellery. The stones have an octagonal outline, and are such named due to the shape's common use in the cutting of emerald gemstones. They can come in a range of length to width ratios, although the classic (and most popular) cut often sees a value close to 1.5. ref: wiki
Asscher Cut Asscher cut diamonds are very fashionable and make fantastic engagement rings. This diamond cut boasts 8 edges and projects an awesome fire, when cut correctly. Asscher cut diamond engagement rings require four-pronged metal settings. wiki
Radiant Cut The Radiant cut diamond also has 8 edges like the asscher cut diamond, but is longer in length. The Original Radiant Cut represents the fusion of the elegant shape emerald cut, with the brilliance of the round stone. ref: wiki
Cushion Cut Cushion cut diamonds have seen a huge rise in popularity. The cushion cut is an antique cut, pillow-cut or candlelight diamond that most often resembles a cross between the Old Mine Cut and a modern oval cut. This cut is not as fiery or brilliant as many of the newer cuts, but it has a romantic and classic long-lasting look. wiki