What Is a Diamond Shape?

The round brilliant cut is one of the most popular diamond shapes for its intense sparkle. Round brilliant diamonds are cut to optimize brilliance, featuring over 56 facets that reflect light and cast tiny rainbows in a breathtaking show of fire and contrast. Since 1886, the Tiffany® Setting has featured a round brilliant diamond, becoming an icon against which all engagement rings are measured. Leading the industry, Tiffany offers a triple excellent cut on all round brilliant diamonds.

Perfect for those seeking a modern engagement ring style, the Tiffany True® diamond features a mixed cut that combines a step-cut crown and a brilliant-cut pavilion. This innovative diamond shape displays intense white reflections balanced with subtle rainbows and movement of light.

Beloved for its contemporary style and sparkle, the princess cut is the most popular fancy shape diamond. Princess-cut diamonds are square modified brilliant cuts with pointed corners. Boasting over 50 chevron-shaped facets, this cut is defined by exceptional fire and scintillation. Princess-cut diamonds can be either square or rectangular. 

Emerald-cut diamonds are sought after for their understated glamour and eye-catching depth. This octagonal step cut features parallel, rectangular facets; and it is the large, open table that highlights the stone’s pure color and icy clarity. The emerald cut is a suitable choice for those seeking an Art Deco-inspired engagement ring style. 

The cushion-cut diamond is also traditionally referred to as the “pillow-cut diamond.” Rounded edges soften the corners of this square or rectangular diamond. A unique spin on the classic round brilliant, the cushion-cut diamond is an excellent choice for any engagement ring setting. 

The oval shape is an elegant combination of the round brilliant cut and the marquise diamond. This brilliant cut features shimmering facets that make the light dance and create the illusion of longer fingers. Bold and sophisticated, the oval diamond is a unique shape for the wearer who wants to express their individuality.

The pear shape combines round brilliant and marquise styles to form a tapered teardrop with an extraordinary display of light. Like oval and marquise diamonds, the flattering pear shape elongates the finger—especially when worn with the point facing the nail. Tiffany pear-shaped diamonds showcase exacting symmetry and are exceptionally beautiful in halo settings.  

Heart-shaped gems are classic symbols of love, cut with a precise length-to-width ratio to ensure expertly symmetrical curves. Sentimental and as rare as true connection, the heart-shaped diamond is an excellent choice for the classic romantic.