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Cushion Shape Diamonds

A diamond's shape is its outline when viewed from the top and is one of its most important defining characteristics. Cut into a square or rectangular shape with rounded corners and sides, the cushion cut diamond is a favorite of those who prefer vintage-style rings and jewelry. Although most commonly found in the brilliant-cut variation, cushion shape diamonds can also be cut using the step faceting technique.

Shop the selection of Cushion cut loose diamonds below and narrow your search by choosing additional filters. For assistance, contact a Brilliance diamond and jewelry expert at 866-737-0754.

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10 of 6,008 results in Cushion Shape Diamonds
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0.50 Carat Cut Loose Diamond, J Color, VS1 Clarity, Excellent Cut, GIA Certified

0.50 Carat Cut Loose Diamond, J Color, VS1 Clarity, Excellent Cut, GIA Certified


0.50 carat shape diamond, J color, VS1 clarity, Excellent cut, GIA certified diamond from Brilliance.
$722
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0.59 Carat Cut Loose Diamond, J Color, SI1 Clarity, Very Good Cut, GIA Certified

0.59 Carat Cut Loose Diamond, J Color, SI1 Clarity, Very Good Cut, GIA Certified


0.59 carat shape diamond, J color, SI1 clarity, Very Good cut, GIA certified diamond from Brilliance.
$715
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0.31 Carat Cut Loose Diamond, F Color, VVS2 Clarity, Super Ideal Cut, GIA Certified

0.31 Carat Cut Loose Diamond, F Color, VVS2 Clarity, Super Ideal Cut, GIA Certified


0.31 carat shape diamond, F color, VVS2 clarity, Super Ideal cut, GIA certified diamond from Brilliance.
$734
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0.57 Carat Cut Loose Diamond, D Color, SI2 Clarity, Ideal Cut, EGL Certified

0.57 Carat Cut Loose Diamond, D Color, SI2 Clarity, Ideal Cut, EGL Certified


0.57 carat shape diamond, D color, SI2 clarity, Ideal cut, EGL certified diamond from Brilliance.
$728
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0.50 Carat Cut Loose Diamond, I Color, SI1 Clarity, Excellent Cut, GIA Certified

0.50 Carat Cut Loose Diamond, I Color, SI1 Clarity, Excellent Cut, GIA Certified


0.50 carat shape diamond, I color, SI1 clarity, Excellent cut, GIA certified diamond from Brilliance.
$741
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0.51 Carat Cut Loose Diamond, G Color, SI2 Clarity, Ideal Cut, GIA Certified

0.51 Carat Cut Loose Diamond, G Color, SI2 Clarity, Ideal Cut, GIA Certified


0.51 carat shape diamond, G color, SI2 clarity, Ideal cut, GIA certified diamond from Brilliance.
$807
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0.51 Carat Cut Loose Diamond, G Color, SI2 Clarity, Super Ideal Cut, GIA Certified

0.51 Carat Cut Loose Diamond, G Color, SI2 Clarity, Super Ideal Cut, GIA Certified


0.51 carat shape diamond, G color, SI2 clarity, Super Ideal cut, GIA certified diamond from Brilliance.
$807
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0.41 Carat Cut Loose Diamond, E Color, SI1 Clarity, Ideal Cut, GIA Certified

0.41 Carat Cut Loose Diamond, E Color, SI1 Clarity, Ideal Cut, GIA Certified


0.41 carat shape diamond, E color, SI1 clarity, Ideal cut, GIA certified diamond from Brilliance.
$733
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0.45 Carat Cut Loose Diamond, D Color, SI2 Clarity, Ideal Cut, GIA Certified

0.45 Carat Cut Loose Diamond, D Color, SI2 Clarity, Ideal Cut, GIA Certified


0.45 carat shape diamond, D color, SI2 clarity, Ideal cut, GIA certified diamond from Brilliance.
$747
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0.34 Carat Cut Loose Diamond, D Color, VS2 Clarity, Ideal Cut, GIA Certified

0.34 Carat Cut Loose Diamond, D Color, VS2 Clarity, Ideal Cut, GIA Certified


0.34 carat shape diamond, D color, VS2 clarity, Ideal cut, GIA certified diamond from Brilliance.
$764
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10 of 6,008 results in Cushion Shape Diamonds
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Diamond Shape

When selecting a certified diamond, shape is one of the most important factors to consider. The contours and outlines of a loose diamond have a significant impact on its appearance. At Brilliance, we offer the ten most popular shapes in our certified diamond search. Round diamonds have long been the most popular, although many modern consumers prefer alternative shapes, including emerald, princess, radiant, and cushion, among others. Each diamond shape has its own unique traits, aesthetic properties, and markings of quality.

Cushion Cut Diamonds

First introduced into the jewelry market in 1830, the long-standing cushion diamond is rooted in mining history. Cut into a square or rectangular shape with rounded corners and sides, it’s considered by many to be a softer version of the emerald cut. Possessing a character-rich antique look, the cushion diamond is a favorite of those who prefer vintage-style engagement rings and jewelry.

Brilliant- or step-cut faceting infuses the cushion cut diamond with admirable brilliance.

To achieve optimal symmetry and light performance in a loose diamond, the stone must be cut to specific depth and table percentages. The depth percentage of a diamond measures the ratio of the stone’s depth to the diamond’s total diameter. The table percentage is the ratio of the width of the diamond’s top facet in relation to the width of the entire stone. For cushion cut diamonds, the depth and table ranges below will yield different qualities of cut.

  • Depth Percentage
    • Ideal: 66% - 55%
    • Excellent: 72% - 52%
    • Very Good: 76% - 50%
    • Good: 78% - 45%
  • Table Percentage
    • Ideal: 65% - 54%
    • Excellent: 67% - 52%
    • Very Good: 70% - 50%
    • Good: 75% - 45%

Every diamond shape has a length-to-width ratio, which determines how a certified diamond will appear when viewed from above. When selecting a square shaped cushion, look for a length-to-width ratio between 1 and 1.05. For those who prefer a rectangular shaped radiant, choose a length-to-width ratio of 1.15 or greater.