Shape

Round, heart, square, pear, etc. are examples of different diamond shape cuts. The most brilliant diamonds are going to be round in shape, and this relates to the symmetry and capability of the diamond to reflect nearly all the light that enters. Non-round diamonds, or “fancy shapes,” have their own individual guidelines to consider for being considered well-cut.

ROUND BRILLIANT SHAPE
58 facets

Accounting for approximately 70% of the world market, the Round diamond is the most popular diamond shape.

PRINCESS SHAPE
76 facets

The Princess cut diamond is squared with right angled corners. It is the second most popular diamond shape.

CUSHION SHAPE
58-60 facets

The Cushion is a square or rectangular shaped diamond with rounded corners. The cut resembles a pillow or cushion, hence the name.

ASSCHER SHAPE
57 facets

The Asscher is a square diamond with diagonal corners and the facets are cut in a step-cut arrangement.

EMERALD SHAPE
48 facets

The Emerald cut diamond is rectangular shaped with diagonal corners. The facets of an emerald cut are arranged in a step-cut fashion resembling a staircase.

HEART SHAPE
59 facets

Seen by many as the ultimate symbol of love, the Heart shaped diamond instantly evokes the innocence and purity of love. The heart shaped diamond is the scarcest on the market, as cutters generally aim to produce more popular shapes from the rough.

MARQUISE SHAPE ​
56 facets

The Marquise is elongated with rounded sides and pointed ends. It has excellent sparkle and its natural shape provides a slimming effect on the finger.

OVAL SHAPE ​ ​
56 facets

The Oval shape’s technical name is Oval Modified Brilliant, based on its shape and modifications of the traditional Round Brilliant diamond.

PEAR SHAPE ​ ​
58 facets

The Pear is shaped as a teardrop and provides excellent sparkle and brilliance, while promoting a sense of uniqueness and individuality.

RADIANT SHAPE ​ ​ ​
70 facets

The Pear is shaped as a teardrop and provides excellent sparkle and brilliance, while promoting a sense of uniqueness and individuality.

TRILLIANT SHAPE ​ ​ ​
​44
 facets

Known as a Trilliant, Trillion, or Triangle Brilliant, this diamond shape has equilateral sides, but may be a conventional triangle shape with pointed corners or softer, rounded corners on the edge.

The characteristics below describe the diamond cuts that you should strive to obtain. This is a good reference when assessing a Round Brilliant diamond.

ROUND BRILLIANT DIAMOND

Characteristic

Value

Table Size %

53-62%

Crown Angle

33-36 degrees

Girdle Thickness

Thin > Slightly Thick

Depth %

60-63%

Cutlet Size

None > Very Small

Symmetry

Excellent > Good

Polish

Excellent > Good


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