The round brilliant cut is conventionally the most popular shape of all diamond cuts and has set the standard. Polished with 57 facets its ideal proportions return a great amount of fire, brilliance, and scintillation. This cut has also been the benchmark for theories of light behavior and precise mathematical calculations, all in the pursuit of perfection.

Although round diamonds are the most sought-after shape, it's still important to know what you're looking for in terms of the 4 C's. Always keep in mind how brilliant you want your diamond to be. Read more about round cut lab-grown diamonds, and when you're ready, talk with a Clean Origin diamond expert to help find your perfect stone.


Square in shape and with pointed corners, the princess cut is the most popular shape of the fancy cut diamonds. Its beautiful brilliance and square shape make it a favorite for engagement rings. Princess Cut diamonds are generally polished with either 50 facets or 58 facets, depending on how the pavilion is cut.

The princess Cut, technically known as a ‘Square Modified Brilliant Cut’, is a square version of the Round Brilliant Cut with numerous sparkling facets. The optimal ratio of length to width is 1:1, although a length-to-width ratio between 1:1 and 1.4:1 is perfectly acceptable. Learn more about princess-cut diamonds below.


The Emerald cut is an elegant diamond shape characterized by its step-like facets, rectangular shape, and trimmed corners. Due to its larger, open table, this shape is often reserved for top color and clarity diamonds. The emerald cut is typically polished with 44 facets. Generally, the optimum length-to-width ratio for an emerald cut diamond should be 1.35-1.65:1, although 1.25:1 to 1.75:1 is also considered to be acceptable.

With the right specifications, an emerald Cut diamond can appear larger than life...and larger than the actual carat size. Work with a diamond expert to find the perfect color and clarity to make your emerald lab-grown diamond shine as bright as the stars. Find more buyers tips and information below.


An oval diamond is an elongated version of the round brilliant. If well proportioned, this beautiful cut gives great brilliance, fire, and scintillation. Oval diamonds are also very popular as their length can accentuate long, slender fingers. Oval cut diamonds are generally polished with 56 facets.

The oval shape has a larger surface area, than a round brilliant of the same carat weight, and is an excellent choice for those more concerned with size. The ideal length-to-width ratio is 1.5:1, but a range from 1.33:1 to 1.66:1 is widely acceptable.

Make sure you understand the in's and out's of oval-shaped diamonds before you decide on a final stone. Questions? Our diamond experts are happy to help you find the best stone.


The pear shape is a unique hybrid cut, shaped like a teardrop and combining the best of the marquise and round brilliant cut. Well proportioned, it gives a depth of scintillation to the point of the diamond. Pear shapes are extremely popular in rings, earrings, and pendants. Pear shapes are typically polished with 58 facets, and the optimal length-to-width ratio is between 1.50 and 1.75:1.

The versitile nature of a pear-shaped diamond gives you optimal looks with just one ring. Learn about the 4 C's of pear diamonds and explore the hand-picked collection of Clean Origin pear-shaped diamonds.


The shape of the Cushion cut is characterized by soft edges and round corners, resembling a cushion or pillow. This type of cut has been popular since the first diamond cuts were developed. Cushion cut diamonds range from a more square shape to rectangular.

If you prefer the squarer shape, look for a length-to-width ratio of 1.05 to 1.10:1. For a more rectangular shape, look for length-to-width ratios of greater than 1.15:1.

Make sure you understand all aspects of cushion-shaped diamonds. If you're unsure about a particular specification, a Clean Origin representative is standing by to help.