The shape of a diamond is concerned with the overall structure and look. Diamonds can be of many shapes, each with its own attributes. Each shape has its own cut specifications. As a result, these factors play a big role in the quality grade and price of a diamond.

At the end of the day, the best shape varies from person to person according to their own preferences. But the unbeaten sparkle of the round shape has been proven to be the most popular of all shapes. A wide shape allows the most diversity in terms of settings and goes well with almost hand and finger shapes. But other shapes like the pear, Asscher, emerald and princess offer unique looks and often turn out be less expensive than the round shape in a same caret class. So each shape has its own benefits and the potential to be the best in a personal preference.

Each diamond shape has its own length to width ratio that are widely acceptable. These ratios generate the best possible shape of a diamond with perfect symmetries. Customers can choose from their preferred ratios and even ask for diamonds shaped in custom ratios.

The shape of a diamond has direct relationship with the color it portrays. The color of a diamond varies with how light is being reflected in which angles. Different shapes interact with light in different ways causing a variance in color. For example, round diamonds show more colors because they reflect more light.

The clarity requirements of a diamond vary with its shape. Different shapes require different clarity grades. For example, the fancier the shape of a diamond, more clarity is required to reveal the unique characteristics of that shape better and to bring out the true potential of that diamond.

The shape of a diamond has a significant impact on the price of a diamond. Prices vary with market demand, manufacturing costs and brilliance of each shape. For example, because of its overall popularity and high scores in the above mentioned factors, the round shape tend to be pricier. The non-round shapes also referred to as fancy shapes have their own demands and price points.