Shapes of Diamond
The shape of a diamond describes the outline of the stone and the pattern of the facet arrangement. In simple terms, it describes how the diamond looks in terms of the outside shaping and physical appearance. Diamonds are manufactured in a variety of shapes. The most popular and traditional of these is round brilliant cut diamonds. All other non-round shapes are called fancy shapes and these different diamond shapes show individual's style and personality. Each shape specifically appeals to an individual or personal taste, each one is also meticulously and systematically cut to highlight the diamond’s best features and bring out its brilliance. Round brilliants also tend to be slightly more expensive than the other shapes.
Each diamond shape possesses its own unique quality and have different attributes, so exploring and learning about the various shapes is worth your while.
Round Brilliant Cut
The round brilliant cut is by far the most conventional and popular diamond shape of jewellery buyers across the world. It is by far the most researched diamond shape available today, accounting for more than 75% of all diamonds sold globally. A round diamond typically gives you more flexibility in terms of balancing cut, colour and clarity grades while still getting impeccable fire, brilliance and sparkle than any other shape. This is the diamond undoubtedly most recognized for its magnificence and splendour. When clarity and colour are equal, a round diamond will have greater worth than the other shapes. The standard round brilliant consists of 57 facets; 1 table, 8 bezel facets, 8 star facets 16 upper-girdle facets on the crown; 8 pavilion facets, 16 lower girdle facets; and usually a culet on the pavilion. Typical length-to-width ratio: 1 to 1.
The princess cut diamond is the second most popular fancy diamond shape after the round brilliant, especially for engagement rings. Much like the round brilliant, the traditionally square shaped Princess cut is a classic and elegant shape, although with its sharp corners boasts more of a contemporary edge. This shape is ideal way to capture the brilliance and simple elegance of the round and still be trendy. For a princess diamond shape that is square, look for length-to-width ratios between 1 and 1.05. If you prefer more of a rectangular shape, look for length-to-width ratios greater than 1.10
The emerald cut diamond is a very popular style known for its beauty and exactitude. The Emerald Cut diamond is a rectangular shaped stone with cut corners. Due to the larger, open table, an emerald cut diamond highlights the clarity of the diamond but with fewer facets brings less brilliance than the other shapes. The unique look of the emerald cut diamond is also known as Step Cut because it has rows of facets of its pavilion, usually 48 to 50, that resemble a staircase. The classic emerald-cut shape will have a length-to-width ratio between 1.30 and 1.40.
This unique beautiful shape is nearly identical to the emerald cut, except that it is square shape with larger step facets and a higher crown. The stones are bright, shiny and clear.
The marquise diamond is a boat shaped or eye-shaped brilliant stone that is considered a classic shape for diamond rings. Its appealing elongated shape and points make it appear larger it really is, with more size per carat weight than other shapes. This shape is embedded with enough power to stand on its own and shine as a solitaire. The ideal marquise-cut diamonds should have length-to-width ratios between 1.75 and 2.25.
An oval diamond has beautiful brilliance that is similar to a round diamond. It is the perfect choice for characteristics similar to the round cut diamond, but something in a shape that is more unusual and brings with it an eternal class. Its lengthy oval shape gives an aura of a diamond larger even than a round of similar carat weight and showing similar brilliance. For the most traditional oval diamonds, length-to-width ratios between 1.33 and 1.66.
Pear shaped diamond is a combination of a round and a marquise shape, with a conical point on one end. It is also called a teardrop form, reminiscent of a pure and perfect drop of water, for it bears the fluid rounded edge on top and the definitive point on the bottom. With exactly 58 facets, the pear-shaped diamond sparkles beautifully. Common length-to-width ratio: 1.45 and 1.75.
Heart Shape Cut
The Heart shaped diamond is the most romantic and loving of the diamond shapes. The origin of the heart shape can be found with the pear shape diamond. The quality of this shape will depend to a great extent on the skill of the cutter. Furthermore, few diamonds are cut as hearts due to the complexity of the design, therefore heart shapes are currently undervalued from a rarity perspective. The traditional heart-shaped diamond should have a length-to-width ratio between .90 and 1.10.
This versatile design combines the brilliance and depth of the round, the grace of the Emerald cut, and the panache of the Princess. This shape is truly "radiant" with tremendous light return making it both a beautiful and dramatic choice. Square shaped Radiant, should have a length-to-width ratio between 1 and 1.05. As for a more rectangular shape, the length-to-width ratio should be greater than 1.10.
The cushion cut is a square or rectangular shape with rounded corners and larger facets to increase its brilliance. It resembles a pillow shape. One of the rarer and more unique choices, the cushion cut’s large facets allow for great light dispersion, giving birth to a much larger range of spectral colours and making for a highly scintillating stone. For a square shaped cushion-cut diamond, the length-to-width ratio should be between 1 and 1.05. Alternatively, if you prefer a more rectangular shape, look for length-to-width ratios greater than 1.15.
Asscher Shape Cut
This diamond shape is almost identical to the emerald, but square rather than rectangular, thus it is fittingly sometimes referred to as the "square emerald". The modern Asscher cut diamond is usually with larger step facets, a higher crown, and a smaller table. This combination often produces more brilliance than the emerald cut. This Diamond is also cut with the step cut method and has cropped corners - giving it an almost octagonal look. The classic Asscher cut diamond is a square with a length to width ratio of 1.00 – 1.05, also often found in slightly rectangular shapes as well.
Trillion cut diamonds (also called ‘Trilliant’ or ‘Trillian’) are triangle-shaped stones with three equally straight or slightly curved sides. Compared to a standard round cut of the same carat, a trillion-cut stone will usually look larger. When cut to certain proportions, triangular brilliants are very bright and lively stones. The optimal length to width ratio for Triangular cuts is 1:1.