The 10 Most Common Diamond Shapes & Cut

What is the shape of a diamond? The diamond shape is not the same as the cut. Diamond cut affects the way light is reflected (how sparkly the diamond is). The diamond shape is the geometric appearance of the diamond. Round is by far the most popular shape, followed by the square (princess, cushion), rectangular (emerald, radiant), pear, oval and heart. 

Knowing the basic information about diamond shapes will help you select the perfect diamond for you or a loved one. 

1. Round Brilliant Cut: timeless, classy, traditional:

The round cut diamond is the most popular diamond shape. Due to the mechanics of its shape, the round diamond is generally superior to fancy diamond shapes at the proper reflection of light, maximizing potential brightness. The ever-popular round diamond has 58 facets, setting the standard for brilliance and beauty.

2. Princess-Cut: dainty, feminine, contemporary:

Stylish and delicate, the princess cut is perfect for the trendy girl. It has intense sparkle and looks good in just about every setting.

3. Cushion-Cut: soft, classic, romantic:

This "pillow cut" features softly rounded edges for a romantic look. The cushion cut is quickly becoming one of the most popular shapes and dazzles in many settings.

4. Oval-Cut: modern, bold, slenderizing:

Oval diamonds are great for those who like to stand out. They appear larger than round diamonds while making a woman's finger look longer and more slender.

5. Emerald-Cut: art deco, sophisticated, glamorous:

The ultimate vintage cut, an emerald diamond exudes old-world glamour. This step-cut diamond should be appreciated for its luster instead of brilliance.

6. Asscher Cut: modern vintage, dramatic, elegant:

The Asscher cut diamond was first produced in 1902 by the Asscher brother of Holland, famous at the time for cutting the world’s largest rough stone. This 21st-century update to the Asscher diamond is square-shaped and more sparkly. Ideal for the woman with vintage tastes but modern flair.

7. Radiant Cut: unique, complex, daring:

Combining the best of a few cuts, the radiant diamond offers fierce sparkle. The cropped corners make it an ideal choice for active women who prefer a square-shaped diamond.

8. Marquise-Cut: showy, unique, elongating:

The marquise cut football-shaped diamond appears the largest of all cuts. The long shape is also flattering on short fingers.

9. Pear-Shaped: elegant, delicate, flirty:

Also called the teardrop diamond, the pear cut is a cross between the round and marquise styles. It's a unique, beautiful shape that excels in a halo setting.

10. Heart-Shaped: romantic, sweet, sentimental:

The only choice for hardcore romantics. A heart-shaped diamond works best in a solitaire setting that accentuates its shape.