Whether it be a brilliant, marquise, pear, emerald or heart shape, all diamonds are subject to the laws of optics and have to be cut within certain tolerances according to specific mathematical guidelines to yield optimum brilliance.
A cushion shape diamond has soft edges and round corners that resemble a cushion or pillow, hence its name. This diamond shape has been around for almost 200 years and was previously known as “old mine cut”.
It has larger facets which give it more fire and brilliance compared to other most other diamond cuts. These larger facets also highlight the diamond's clarity, therefore we recommend selecting a diamond with a high clarity.
The Princess cut has been especially popular for several years and can be found with increasing freequency. Like the Radiant, it is a combination of a brilliant and step cut, so that it is cut as a square. In general, the Princess cut has very good fire and a high degree of brilliance, which explains why it has gained wide acceptance. Princess cut diamonds are the second most popular shape diamond for diamond engagement rings. They are an ideal choice for those who like the brilliance of a round diamond, but prefer a square shape.
Asscher-cut diamonds are a beautiful and popular diamond cut that is characterised by a step cut and cropped corners, giving it a unique, almost octagonal shape. It is nearly identical to the emerald cut, except that it is square. Also, this shape has a pavilion that is cut with rectangular facets in the same style as the emerald-cut.
An oval diamond is an elongated version of the round brilliant diamond and is generally polished with 56 facets. This diamond shape has an additional advantage of appearing larger than its actual carat size because of its elongated shape.
This shape is often reserved for top colour and clarity diamonds due to its larger, open table. Because of this long table, inclusions are more easily seen on emerald shape diamonds than other more brilliant cuts. Typically polished with 44 facets, Emerald cut diamonds can vary greatly in how rectangular they are.
Pear diamonds are typically polished with 58 facets, which allows light to pass through the diamond much in the way light passes through a round diamond. Its unique shape makes it a popular choice for jewellery, including diamond engagement rings, pendants and earrings. The length of the diamond elongates fingers for a sophisticated and elegant look.
Heart shape diamonds are a modified brilliant cut, polished with 59 facets. They come in a variety of silhouettes, ranging from narrow to wide – which is based on personal preference. They have a cleft at the top and typically have great brilliance.
When selecting a marquise diamond, colour and clarity are the two most important aspects to consider. A marquise diamond is cut in a way that is similar to a round brilliant diamond, except the carat weight of the stone is maximised by lengthening it into its highly recognisable boat-shape.