Diamond University – Diamond Shapes

What is Diamond Shape?

A diamond’s shape is often confused with its cut. The shape refers specifically to the style in which the diamond is fashioned into when it is cut by a diamontaire. The diamond’s “cut” on the other hand refers to the proportions of a diamond’s angles (graded from poor to excellent), which determine how well a diamond will reflect light (sparkle).

What shapes are there?

There are currently 10 distinct diamond shapes. Diamond shape can play a role in determining a stone’s value; if a certain shape is currently regarded as popular, then its demand increases and its value goes up.

SHAPE DESCRIPTION
Round Brilliant The most traditional cut for a diamond and also the most popular. This diamond is brilliant-cut, which means it has 58 facets. This cut is ideal for making the diamond sparkle most brilliantly and is also generally worth more money than fancy shape diamonds.
Emerald A rectangular cut with a large table (top of the diamond) that lets more light through to show the step cuts of its pavilion. Because the table is very open, clarity is very important for an emerald-cut diamond.
Asscher A square cut with rectangular facets. Asscher diamonds are similar to emerald-cut diamonds, but may have better sparkle than an emerald-cut. Clarity is very important for an asscher-cut diamond.
Princess A square cut with pointed corners. This stone is popular for its brilliance, versatility, and unique shape.
Marquise An oval cut with pointed tips, somewhat like a football. This is a longer stone, which may make it appear larger. Symmetry is an important trait in marquise diamonds due to the way they appear in a setting. Marquise stones are modified brilliant-cut, meaning that they have 58 facets.
Oval An oval-shaped stone. Oval diamonds are modified brilliant-cut, meaning that they have 58 facets and therefore may appear like an elongated round brilliant.
Radiant A square-cut stone with trimmed corners that still allows for a brilliant effect.
Pear A stone shaped like a teardrop. Symmetry is an important factor in an ideal pear-cut stone. Pear diamonds are modified brilliant-cut, meaning that they have 58 facets.
Heart Shaped like a heart, making it an obvious choice for giving to a loved one. The size and the length-to-width ratio is important for a heart-shaped diamond’s appearance; if it is off by too much, the heart may appear too narrow or too wide.
Cushion A square cut with rounded corners. Clarity is very important for a cushion-cut diamond.