Diamond Shape

A diamond’s shape is its most distinguishing and easily identifiable feature. Diamonds are cut in a variety of shapes that maximize diamond brilliance and give character to the diamond. Different shapes can represent different personalities and events. Round brilliant cuts are the most popular, followed by Princess cut diamonds. At Four Mine, we offer the 9 most popular diamond shapes, certified by GIA. While the correct term is diamond shape, many also refer to this feature as the cut of the diamond. There are many different types of cut or shapes of diamonds. However, there are ten that are most popularly used for jewelry and engagement rings. Learn more about each shape below.

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About Diamond Shapes

Diamonds are cut in a variety of shapes. But how does a diamond cutter decide what shape to create? Well, a diamond cutter's number one responsibility is to preserve and maximize carat weight. And since rough diamonds can come in unpredictable shapes and sizes, the diamond cutter will create whichever shape maximizes carat weight and value.

Interestingly enough, round cut diamonds actually result in the most wastage of rough diamond carat. The other fancy shapes are deeper and tend to have longer, less uniform shaping so they capture more of the rough diamond.

While diamonds can be cut in any shape, there are 10 popular diamond shapes: Round, Princess, Cushion, Oval, Emerald, Pear, Marquise, Asscher, Radiant and Heart shape. Exotic shapes include Baguettes, Bullets, Half Moons, Trillion, Old Mine, Rose, even Horse head.


Shapes

round cut diamond

Round: STYLE: classic, elegant, sparkling

Most popular and researched shape - When cut well, the proper reflection of light, the potential of brilliance and brightness is maximized. The round brilliant cut diamond has 58 facets. Its 58-facet cut, divided among its crown (top), girdle (widest part) and pavilion (base), is calibrated through a precise formula to achieve the maximum in fire and brilliance. When cutting a rough stone, more is lost in shaping a round diamond, so the cost of each carat retained is higher. Over 75% of the world's diamonds are Round Brilliants. There are many different types of cuts, however, the most popular are those that have been used to create engagement rings and jewelry over time.

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Princess Cut Diamonds

Princess: STYLE: trendy, beautiful, angelic

Second most popular shape - prefered in square shape but available in rectangular shape also. The princess cuts that are slightly rectangular tend to be lower in cost. This cut requires more weight to be directed toward the diamond's depth in order to maximize brilliance. Depth percentages of 70% to 78% are common. Ideal square ratio ranges from 1.00 to 1.05. A princess cut should always be set for 4 prongs protecting its corners from chips. It is ideal for long fingers and wedding bands. It has 57 or 58 facets and is known as square modified brilliant cut or Rectangular Modified Brilliant when the ration is greater than 1.10.

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Cushion Cut Diamonds

Cushion: STYLE: romantic, graceful, sophisticated

Cushion cuts blend the energy of a round brilliant with the symmetry of a radiant cut. It's romantic appeal is reflected in its larger 58 facets and rounded, squared corners. Also known as the "pillow cut," the cushion cut has larger faceting, which augments the diamond's brilliance. Larger facets can show clarity inclusions, so evaluate the location of inclusions by examining the certificate's diamond plot. Cushion cuts are popular in both square and rectangular shapes. Square cuts are generally a bit rarer, but do look more symmetrical in an engagement ring. Cushion cut diamonds have great fire (the light that is reflected out of a diamond in a rainbow of color).

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Emerald Cut Diamonds

Emerald: STYLE: modern, bold, glamorous

Emerald diamond cuts represent unification, as they are well proportioned and bring out the pure brilliance of a diamond. Also known as "step cut" because of the layered faceting, the emerald cut possesses unique appeal with symmetrical sparkle. The faceting is minimal and simple, and therefore tends to show inclusions. The diamond has 58 facets, roughly 25 on the crown, 25 on the pavilion, and 8 on the girdle with 3 rows of bottom steps and three rows of top steps. An open setting can also show the diamond's color, so closed or bezel type settings are recommended with lower colors.

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Radiant Cut Diamonds

Radiant: STYLE: fiery, diva, provocative

A beautifully symmetrical, non-traditional cut, the radiant cut combines the brilliance of a round and the purity of an emerald cut. Trimmed corners give it versatility among all kinds of jewelry, especially engagement rings. The faceting of a radiant cut gives it a fiery look compared to a princess cut, while maintaining soft, cut corners. The radiant fuses the plus points of other popular diamond shapes. The rectangular radiant cut is an excellent option for buyers who like the emerald cut shape, but want something with the brilliance of a round. A ratio of 1.00 to 1.05 will create a square shape, and from 1.30 to 1.50 will produce a rectangle.

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Asscher Cut Diamonds

Asscher: STYLE: balanced, vintage, creative

The asscher cut is (also a step cut diamond like the emerald cut) is a blend of the princess and emerald cuts with X-shaped facets from its corners to its center culet. The brilliance of its faceting can mask certain inclusions and lower color grades. Asscher cut diamonds have a clean balance, visual appeal, and can reflect clarity inclusions and color. Higher grades in both categories are generally recommended. The step cut emphasizes the clarity of the diamond, and it is ideal for showcasing higher clarity diamonds. Asscher cuts are a popular shape that was developed during the Art Deco Period. Suggested Cut Ratio: 1.00 to 1.05 for square proportions.

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Marquise Cut Diamonds

Marquise: STYLE: dramatic, moving, joyful

The marquise cut is a classic and historic diamond that resembles the delight of a smile. The marquise is a variant of round and pear shaped diamonds, and like the oval is a perfect complement to long, slender fingers. The marquise cut's elongated body can make its appearance larger than its actual carat weight. It is an excellent cut to show the impression of long, slender fingers. Suggested Cut Ratio: 1.75 to 2.25 is the ideal shape.

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pear cut diamonds

Pear: STYLE: contemporary, unique, gentle

The pear shape diamond is artistic due to its many stylish variations. With 58 facets, light dances through the diamond similar to a round brilliant, maximizing sparkle. It's teardrop appearance leaves a lasting impression. The pear shape’s body allows the wearer the option of pointing it up or down. Its faceting often masks inclusions, and those found near the point tend to be less visible. Pear shapes can be wide or elongated, with longer pear shapes providing a slimming effect on fingers. Suggested cut ratio: 1.5 - 1.7. Most flaws such as naturals, and extra facets are at the point of the diamond. Always set the diamond with a prong covering the point of the stone to prevent any chipping.

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