Besides the usual diamond shapes, those seeking something unique also have a lot of variety of geometrical forms to choose from. Unusual shapes of diamonds promises a wide range and these can be converted into custom jewelry that is absolutely unique. Here are some of the forms that one can expect.

Tablet shape diamond: here the stone is cut in the form of a tablet, with three straight sides and one end curved. A popular example of this shape is the Ten Commandments diamond which is in the shape of a recognizable tablet. The table facet of this diamond tablet is laser inscribed with verses of the Ten Commandments. Protestant, Catholic and Jewish versions of the Ten Commandments diamond are available. The stone is patented by the Trillion Diamond Company since 2006.

Triangular diamonds: These resemble more of a prism and offer plenty of brilliance. Such stones can easily be used as solitaires. They can even be inlaid in the metal for a simple elegant look. Modified triangle shapes are also available. These include Trillion diamonds that were developed in the 1970s. Also known as trielle, trillion and trillian, this design was patented and trademarked by Henry Meyer Diamond Company of New York, in 1962. This is a variation of the radiant cut, and comes with step cutting and brilliant faceting. Corner trillion diamonds is a prevalent variation of this cut that comes without the sharp angles. Instead the angle is cut off for a smoother surface. This shape of diamonds is commonly used for side stones as solitaires in this cut are quite rare. Special prongs in V shape are needed to hold trillion solitaires in place. Another form of triangle diamonds is the shape offered by Amorillion cuts, were two triangular diamonds together give the illusion of a marquise.

Shield shaped diamond: As the name implies, these stones are cut in the form of a shield used in battles.

Kite shape: This is one of the oldest known fancy diamond shapes. Here the diamond is cut to resemble a kite. Alternatively, the side view of a diamond may resemble a kite. The kite shape was designed by hand by Leo Schachter. Many experts agree that the kite shape often looks better as side stones of a major solitaire. This shape was exclusively available only at Bailey Banks and Biddle. A modified version of this shape is the Italy's star, a kite shape that is also reminiscent of a star.

Kissing shape: This is another unusual shape designed by Yossi Atuar that still has to find its mark in the market. As the name implies, the single elongated stone used here, resembles the shape of two lips as in a kiss.

Horse head diamond: here the diamond is in the shape of a horse's head and can carry exceptional details. A high clarity diamond can bring in a lot of brilliance and make this shape rather mesmerizing. The horse head diamond comes with detailing in the ears and mouth. The shape can easily be set in pendants, matching ear rings and also finer rings. This shape is a good seller with horse lovers.

Buddha: As is obvious from the name, here the diamond resembles a meditating Buddha. It is completely handcrafted and sculpted out from one single round diamond. This stone is considered as a three dimensional work of art and brings with it a lot of charm, class and good luck. With 56 facets, this stone is said to refract light in all seven colors of the rainbow. Three versions of this shape are available in the market, varying with the three major geographical and philosophical paths of Buddhism. These are the Shakyamuni Buddha (based on Indian faith), the Kwan Yin Buddha (based on Chinese philosophy) and the Jinarata or Thai Buddha.

Christmas cut: To celebrate the spirit that Christmas brings, this diamond is shaped in the form of a Christmas tree. This shape originated over 20 years ago, when it was created by George Saltzman of New York. The single round diamond is cut in a triangular shape with roves to give it the shape of a pine tree. While it is not so popularly cut now, such stones can make excellent festive jewelry and can be worn as pendants and ear rings.

HAlf moon cut: These diamonds are in the shape of a crescent. Here the stone is cut straight on one side while the other edge is rounded. Initially these stones were cut from broken or cracked round shape diamonds. However with time, this cut has gained prevalence and it is obtained from octahedron and marquise rough also. Cutting half moon diamonds is noted to cause lot of loss in diamond weight for getting the proper brilliance. These stones lend well as side stones with their straight ends complementing the center stone.

Floral shapes: These are quite popular and can be obtained either through a solitaire or by clustering small diamonds together. In solitaires this shape was first discovered by Gabi Tolkowsky in 1986. Flower shapes are obtained by using a combination of five fancy cut shapes. These are zinnia, marigold, Dahlia, fire rose and sunflower cut. Among these, the zinnia is obtained by cutting the diamond in a round fancy shape with 73 facets, the marigold is an octagon with 73 facets, the fire rose is hexagonal, and unusual angles mark the shape of the sunflower with 43 facets. Unconventional cutting angles are usually employed to obtain maximum brilliance. Some diamond cuts are now also developed that give the appearance of a flower inside the diamond. The lily cut provides another beautiful shape of a four petal flower. Orchidea cut also gives way to design a four petal orchid and can be manufactured for diamonds 20 points and over.  

Leaf shapes: Diamonds shapes are quite inspired by nature, and leaf shapes are another popular example to demonstrate this. Many small stones in this shape can be set together to give the resemblance of a trailing vine. Solitaires like the four leaf clover designs titled lucky leaf are quite prevalent in the designer's world too. The maple leaf is another popular version.

Star shape: Diamonds can also be cut in star shape to give a festive look to jewelry. Five point stars can be cut from octahedral rough. This shape has been patented by Rising Star. The genesistar is a popular patented version of the star shape with four points. These four points of the star are however cut off to make setting easier. The Montblanc is another distinctive diamond that was designed to commemorate completion of a century of operations by the firm. This star has six points that have been curved slightly. Popular as pendants, bracelets, ear rings, brooch pins, and even finer rings, larger diamonds are ideal for star shape stones.

Butterfly shape: A beautiful shape that complements the natural beauty of diamonds. While butterfly shaped solitaires look elegant, diamonds in this shape can be complemented with other stones for enhancement. First of its kind was launched in Qubec by the Twin Mining Corp.

Besides the above unusual shapes there are many other shapes that vary with the designer's creativity. Keep in mind that shape does not affect the diamond's quality.

Important aspects before choosing an unusual shape

Before you pick up an unusually shaped diamond, because of its uniqueness, let it pass through these questions.

• Does the diamond weigh as much as you wanted it to.
• Does the diamond look as big as you wanted it to?
• Does the unique shape suit the wearer
• Would it suit well as jewelry or would it look out of place.
• Does the stone have plenty of brilliance and life as you desired.
• Have you looked through enough selections of shapes?
• Is the diamond for pleasure or for investment?