Sapphires are typically cut is standard millimeter sizes that vary with each shape. These shapes are used in common sizes. These are calibrated sizes, that are common standards used by jewelers across the world. Uncommon shapes and sizes can be found in larger or unusually colored sapphires. Typically unusual shapes have a higher value. Overall, the selection of a shape and carat weight is a personal choice. Sapphire is a durable gem meaning that regardless of the shape and size selected it can withstand daily use and wear.
While color is the most important consideration in a gemstone, the sparkle it emits is also an important factor in determining it’s value and beauty. The shine that a sapphire emits is dependent on the amount of light entering and reflecting out of the gemstone. A sapphire that is cut optimally will have even facets, symmetrical facets and angles that enhance its sparkle. Visually, a well cut sapphire will be much more appealing. Understanding which type of cut will unleash the most brilliance is an art, but once achieved can add a lot of value to the sapphire.