Diamond Shape

Brilliant

Round shape

The brilliant cut is the most popular of all cuts. When cut with ideal proportions, the brilliant cut allows maximum scintillation, beauty and fire. Comprised of 58 facets, it follows the rough diamond shape more naturally and thus is the most popular for cutting due to the beauty it radiates.

Princess

Princess shape

The princess cut is one of the most popular fancy shapes. A perfectly cut princess stone is demonstrated by its exact 90 degree internal angle on each corner. Princess cut diamonds may sometimes also be more slightly rectangular.

An optimum princess shape has a length to width ratio of 1:1
An acceptable princess shape has a length to width ratio of 1-1.4:1

Oval

Oval shape

The oval cut has a particularly beautiful shape. When well proportioned, the oval cut displays spectacular scintillation and fire similarly to an ideal cut round brilliant diamond.

An optimum oval shape has a length to width ratio of 1.5:1
An acceptable oval shape has a length to width ratio of 1.5-1.75:1

Heart

Heart shape

The heart shape is a universally recognised symbol of love. When well cut, the heart shape will provide beautifully sparkling scintillation.

An optimum heart shape has a length to width ratio of 0.9-1.2:1

Marquise

Marquise shape

The marquise shape, also known as navette, has an illustrious history dating back to 18th century France. The marquise shape is slender and striking when well proportioned.

An optimum marquise shape has a length to width ratio of 2:1
An acceptable marquise shape has a length to width ratio of 1.75-2.25:1

Emerald

Emerald shape

The emerald cut is very distinctive and bold. The emerald cut has a series of flat rectangular facets which give it a unique brilliance quite different to that of a curved cut.

An optimum emerald shape has a length to width ratio of 1.35-1.65:1
An acceptable emerald shape has a length to width ratio of 1.25-1.75:1

Trilliant

The trilliant is a more unusual, triangular shaped cut which may have curved or uncurved sides. Trilliant cut diamonds display very sharp brilliance, fire and scintillation when the cut to the correct depth. Trilliant cut stones are an excellent choice as shoulder stones accompanying square or rectangular shaped stones.

An optimum trilliant shape has a length to width ratio of 1:1

Curved Trilliant

The curved trilliant has a softer look that that of the straight edged trilliant and has slightly rounded shape. It has a deep appearance with three soft points and three lines of curvature.

An optimum curved trilliant shape has a length to width ratio of 1:1
An acceptable curved trilliant shape has a length to width ratio of 1.1:1

Pear

Pear shape

The pear shape is a popular fancy cut which has a base of a brilliant cut extending to a point. When well proportioned, it allows a depth of scintillation to the point of the stone - a benefit in design if a longer look is required.

An optimum pear shape has a length to width ratio of 1.5:1
An acceptable pear shape has a length to width ratio of 0.5-1.7:1

Radiant

Radiant shape

The radiant shape can either be cut as a square or as a rectangle. The radiant has a strong look with many different facets and corners cut to enhance its sparkle. The radiant may be an interesting alternative to the emerald or princess cut shapes.

An optimum radiant shape has a length to width ratio of 1:1
An acceptable radiant shape has a length to width ratio of 1.5:1

Baguette

Named after the French bread stick, the baguette may be with longer or more emerald shaped proportions. The proportions should be more rectangular when the baguette is to be the centre stone in a ring. The baguette is ideal for those who would like a long stone and it is often used as a shoulder stone.

An optimum baguette shape has a length to width ratio of 1.5:1
An acceptable baguette shape has a length to width ratio of 1.5-2.5:1

Tapered Baguette

The tapered baguette is a variation on the standard baguette cut and has a fine, slender appearance. This cut is often used as a shoulder stone.

An optimum tapered baguette shape has a length to width ratio of 1.5:1 An acceptable tapered baguette shape has a length to width ratio of 1.5-2.5:1

Asscher Cut

Asscher shape

The Asscher cut was named after a prominent diamond cutter named Joseph Asscher who famously cut the 3,106 carat Cullinan diamond. In 1902, his company Asscher Diamond Co. developed the Asscher cut, a squared step cut with an almost octagonal outline. This new cut enhanced the fire and light of the stone; it had a small table, a high crown, wide step facets, a deep pavilion and square culet. This cut became very popular in Art Deco jewellery and was predecessor to the emerald cut. Recently, the Royal Asscher Diamond Co. resumed production of the original Asscher cut diamonds.

An optimum Asscher shape has a length to width ratio of 1:1
An acceptable Asscher shape has a length to width ratio of 1-1.4:1