Shape

Diamond shape refers to the overall look of a diamond. Diamonds come in a variety of shapes. Do not confuse diamond cut with diamond shape; diamond cut is what determines how well cut a diamond is, whereas diamond shape is the shape it was cut into.

Most Popular Diamond Shape?

The most popular diamond shape chosen by our 50,000+ happy customers is the Round Brilliant shape, closely followed by the Princess shape. The Round Brilliant is also the most readily available in every possible quality and size. The choice of shape is of course your personal preference, so please take a moment to view a range of diamond shapes below.

Top Tips

To help you choose the perfect diamond Shape, we have collated a few top tips


Most people who receive diamonds as a gift or for an engagement have a shape preference. While other factors (such as price and quality) should be determined by the purchaser, the choice of shape should include input from the recipient of the diamond, if at all possible. This is especially true for fancy shape engagement diamonds.
Unless a particular preference has been expressed, consider a round diamond. Round diamonds tend to have more brilliance and scintillation than other shapes, they accommodate almost any ring setting, and never go out of fashion.
Round shape diamonds come at higher price point than fancy shape. Round shape has more facets compared to other shapes and that results in more wastage when cutting, which makes it more costly.
 

A Selection Of Diamond Shapes Include:

Round Brilliant

The most basic of diamond shapes and the only shape not considered fancy, this shape is a rounded diamond in the shape of a circle. The Round Brilliant is the classic diamond shape and contains 58 facets including the culet. The Round Brilliant shape is the most expensive as it is usually possible to retain more carat size by cutting to fancy shapes than cut to a round.

CT MM
0.25 3.5x3.5
0.50 4.25x4.25
0.75 4.75x4.75
1.00 5.5x5.5
1.25 7.0x7.0
1.50 6.25x6.25
2.00 7x7
3.00 7.80x7.80

Princess

A square cut diamond that has refractive properties almost the same as the Round Brilliant shape. The Princess is the second most popular shape. This squared diamond has grown in popularity despite being a relatively new shape. The Princess cut is becoming popular because it is both brilliant and unique.

CT MM
0.25 3.5x3.5
0.50 4.25x4.25
0.75 4.75x4.75
1.00 5.5x5.5
1.25 7.0x7.0
1.50 6.25x6.25
2.00 7x7
3.00 7.80x7.80

Marquise

The Marquise shape is long and slender. This shape, originally commissioned by Louis XIV of France, is wonderful for maximising the carat within the setting. The Marquise shape will accentuate the length of the fingers and works well on a person with longer, slender fingers.

CT MM
0.25 6.2x3.3
0.50 7.5x4.2
0.75 8.3x4.7
1.00 9.2x5.2
1.25 10.00x5.60
1.50 10.7x 5.9
2.00 12x6.5
3.00 14.50x7.00

All diamonds are all divisible by the method outlined above. Some very rare diamonds can weigh 100 carats or more and be worth many millions of pounds.

Emerald

A rectangular shaped diamond; the Emerald is a classic, aristocratic and elegant shape.

CT MM
0.25 4.2x3.2
0.50 5.3x3.8
0.75 6.3x4.4
1.00 6.6x4.8
1.25 6.80x5.10
1.50 7.5x5.5
2.00 8.5x6.3
3.00 9.60x6.80

All diamonds are all divisible by the method outlined above. Some very rare diamonds can weigh 100 carats or more and be worth many millions of pounds.

Pear

Mostly used in rings and pendants, the Pear shaped diamond is shaped has reasonably good proportions for refracting light.

CT MM
0.25 5.5x3.6
0.50 6.5x4.6
0.75 7.6x5
1.00 8.3x5.2
1.25 9.50x6.10
1.50 9.5x6.2
2.00 10.5x7
3.00 12.00x8.60

All diamonds are all divisible by the method outlined above. Some very rare diamonds can weigh 100 carats or more and be worth many millions of pounds.

Heart

Essentially a pear shaped diamond with a cleft at the top; the Heart shaped diamond is the ultimate symbol of romance. This shape of diamond is frequently seen in pendants but is also acceptable as a choice for a ring.

CT MM
0.25 3.8x4.2
0.50 4.7x5.3
0.75 5.9x6.5
1.00 6.3x7
1.25 6.70x7.60
1.50 7.6x8.5
2.00 8x8.8
3.00 8.20x9.85

All diamonds are all divisible by the method outlined above. Some very rare diamonds can weigh 100 carats or more and be worth many millions of pounds.

Oval

The Oval shape has a very brilliant appeal and is beautifully proportioned.

CT MM
0.25 5x3.7
0.50 6.1x4.5
0.75 7.1x5.2
1.00 7.7x5.8
1.25 8.30x5.80
1.50 8.6x 6.6
2.00 9.6x6.6
3.00 11.20x8.00

All diamonds are all divisible by the method outlined above. Some very rare diamonds can weigh 100 carats or more and be worth many millions of pounds.

Radiant

This square or rectangular shaped diamond combines the elegant and classic appeal of the Emerald shape, with the simplicity of the Round Brilliant shape.

CT MM
0.25 4.2x3.2
0.50 5.3x3.8
0.75 6.3x4.4
1.00 6.6x4.8
1.25 6.80x5.10
1.50 7.5x5.5
2.00 8.5x6.3
3.00 9.60x6.80

All diamonds are all divisible by the method outlined above. Some very rare diamonds can weigh 100 carats or more and be worth many millions of pounds.

Asscher

The Asscher diamond shape is square with deeply trimmed edges. Asscher shaped diamonds are rare and sought-after for their remarkable depth and beauty.

CT MM
0.25 3.5x3.5
0.50 5.3x3.8
0.75 4.75x4.75
1.00 5.5x5.5
1.25 5.80x5.80
1.50 6.25x 6.25
2.00 7x7
3.00 7.80x7.80

All diamonds are all divisible by the method outlined above. Some very rare diamonds can weigh 100 carats or more and be worth many millions of pounds.

Cushion

Cushion Cut diamonds are a square cut with rounded corners also known as the old mine cuts. This shape has been into existence for over 200 years and was the popular shape in the early 18th Century just like the round shape today.

CT MM
0.25 3.5x3.5
0.50 4.25x 4.25
0.75 4.75x4.75
1.00 5.5x5.5
1.25 5.80x5.80
1.50 6.25x 6.25
2.00 7x7
3.00 7.80x7.80

All diamonds are all divisible by the method outlined above. Some very rare diamonds can weigh 100 carats or more and be worth many millions of pounds.

Get In Touch

If you'd like to talk to an expert gemologist about our diamonds, or a member of our friendly Customer Care Team, please get in touch on 1800 947 196 1800 947 196 or enter into a Live Chat as you prefer.