Marquise Cut Diamonds

Diamond Shape: Marquise Cut

There is no denying the timeless elegance of a marquise cut diamond. Due to their extended length, marquise diamonds can appear larger than other diamond shapes with the same carat weight or size. Boasting a brilliant 58 facets, the shape shines with substantial fire and sparkle. The marquise cut’s flattering effect creates the illusion of long, slender fingers. Due to their vintage flair, marquise diamonds are popular in vintage heirloom jewelry and look particularly stunning in accessory pieces, such as pendants, brooches or necklaces.

As with other elongated shapes such as the pear or oval cut diamond, marquise stones are prone to a “bow-tie” in the middle of the diamond where part of the stone appears dead as a result of the arrangement of facets. To prevent this, select a marquise cut with a length-to-width ratio below 2.20. Regardless, a visual inspection can establish if a marquise cut you are interested in has a bow-tie or not. Marquise diamond rings and other jewelry may also need special care due to its sharp points, which can make the stone susceptible to damage.

Marquise Cut Diamond Guide

Every diamond shape has a length-to-width ratio that determines how a diamond will appear when viewed from above. When selecting a loose marquise diamond, look for a length-to-width ratio between 1.7 and 2.3.

Diamond Size Chart

Depth % Range for Marquise Cut Diamonds

Marquise Diamond | Side View

Ideal

66-56

Excellent

72-54

Very Good

76-52

Good

78-46

Table % Range for Marquise Cut Diamonds

Marquise Diamond | Top View

Ideal

64-54

Excellent

66-52

Very Good

68-50

Good

75-45

Length to Width for Marquise Cut Diamonds (L÷W = Length to Width Ratio)

Marquise Diamond | Length to Width (1.7)
1.7
Marquise Diamond | Length to Width (2.0)
2.0
Marquise Diamond | Length to Width (2.3)
2.3

Diamond Carat Size Comparison Chart for Marquise Cut Diamonds

MM SizeCarat Weight
3x1.5 mm.0.025 ct.
3.5x1.75 mm.0.065 ct.
3.5x2 mm.0.07 ct.
4x2 mm.0.10 ct.
MM SizeCarat Weight
3.75x1.75 mm.0.11 ct.
4.25x2.25 mm.0.12 ct.
5x2.5 mm.0.14 ct.
5.5x2.75 mm.0.16 ct.
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