Gemstone Shapes
Shapes plays an important role in making a diamond uniquely yours. Here’s a guide that highlights the distinctive qualities of each shape and whether it’s the right fit for you.
When buying a diamond, you know how important the 4Cs are in defining diamond quality. But well before buying comes dreaming. And when you envision the perfect diamond you’ll own one day, chances are the first thing that comes to mind is its shape.
A diamond’s shape refers to the general silhouette of the stone and is not to be confused with cut, or the stone’s facet arrangement. For more information on how to differentiate between diamond shape and cut, go here.
Round:
Used frequently in earrings, pendants and solitaire engagement rings, round remains the most popular shape for diamonds. Virtually all round diamonds are brilliant-cut and for good reason. When cut as a round brilliant, the diamond’s angles help to enhance its fire and brilliance.
Square:
This dynamic shape has the extraordinary ability to look either modern or vintage, and creates the illusion of a larger diamond. Most square-shaped diamonds will feature either a princess or Quadrillion cut, and are quite popular engagement ring choices. When choosing a square diamond, make sure all sides are parallel, and choose a prong setting that will protect the corners
Rectangle:
Rectangular shapes come in a variety of cuts, including cushion, barion, and baguette. The Asscher and cushion cuts surged in popularity in the early 1900, making these ideal for those who prefer classic jewelry. Look for parallel sides and even corners with this shape.
Octagonal:
You’ll often see octagonal-shaped diamonds with an emerald cut, the emblem of the Art Deco period. The rectangular table and step-cut facets give it a mirror-like appearance, which means that clarity will be an important quality for the diamond, since inclusions are highly visible.
Oval:
Oval-shaped diamonds have a long history, dating back as early as 1304 with the famous Koh-i-Noor. Today, they’re making a strong comeback, and are a popular choice, particularly if you’d like your finger to appear longer and slimmer. Like round diamonds, ovals cut in the brilliant style exhibit a similar fire and brilliance.
Marquise:
Named after a mistress of King Louis XV, whose mouth it was thought to resemble, this shape creates an illusion that the diamond is larger in size. Watch out for symmetry in marquise-shaped diamonds – even the slightest difference can make a diamond appear uneven and unbalanced.
Pear:
Resembling a teardrop, the pear shape blends the best of the round and marquise shapes. Rounded shoulders and wings create an appealing outline, but symmetry is key for this shape. Wear the point out toward the tip of your fingers for a slimming effect on your hand.
Heart:
This eternally romantic and feminine shape is not as prevalent as you might expect, making it all the more special. Heart-shaped diamonds should have two symmetrical halves with a distinct cleft and even wings and lobes. A perfect shape for Valentine’s Day.
Triangle:
Usually used as side stones, the triangle shape is a truly unique and adventurous choice for a solitaire. Most triangle-shaped diamonds are cut in the brilliant style, also called the trillion or trilliant cut. Inclusions tend to be easier to see with this shape, so look for a stone of high clariy.