A diamond shape is an expression of personal style.
Ada Diamonds offers diamonds in thirteen gemstone shapes in both brilliant and step cuts. No shape is superior to another. Whether you’re interested in a brilliant cut with its triangular facets that capture and reflect the most amount of light, or a step cut with its large, stunning trapezoidal facets, Ada Diamonds guarantees that its diamonds are among the best cut in the industry.
This video clearly demonstrates the difference between the two cutting styles in two diamonds that have virtually identical overall dimensions. The Radiant and Princess Cut diamonds are brilliant cuts, whereas the Asscher and Emerald Cuts are step cuts.
Ada can cut diamonds to custom specifications for antique, or non-traditional shapes for custom jewelry, or to be sold as a loose stone. Please inquire if you seek an uncommon shape.
Here is a printable sizing chart that allows you to see the true size of various carat weight diamonds of various shapes.
Circular in shape, and brilliant in style. The round brilliant is the most well known, most studied, and most popular diamond style of the last 100 years. The round brilliant has 58 facets, and it's proportions are said to maximize for potential brightness.
The cushion cut is the marriage of the round brilliant and radiant cuts with its square or rectangular shape and rounded edges. The cushion cut has no vertices. It is one of the most popular diamond shapes today.
The Princess cut—also known as the Square brilliant—has the brilliance and fire of the Round Brilliant, but it is square in shape. This cut was perfected in 1979 by Israel Itzkowitz.
The Radiant Cut is octagonal in shape with clipped or cut corners, which make the gemstone easier to set in jewelry and more durable. Radiants can also be cut in either rectangular or square dimensions. This cut is also known as a Cut Corner Square Brilliant or Cut Corner Rectangular Brilliant.
One of the oldest diamond cuts, it features large facets and cropped corners that draw light into the center of the stone, intensifying its brilliance and fire. Rectangular in shape, the emerald cut is a beautiful choice for Ada’s best diamonds.
The asscher cut is similar to the Emerald cut, but is square in shape and more closely resembles an octagon. This cut is named in honor of Joseph Asscher, who perfected the emerald and asscher cuts in the late 19th century. Given their geometric symmetry, it makes sense that they would have been a staple in art-deco jewelry.
Oval cut diamonds were popularized in the 1960s, and are often said to make the finger of the wearer appear more elongated given its shape. Since oval diamonds vary in width, you can work with our diamond concierge to find the dimensions that work best for your design.
The pear cut diamond is an asymmetric teardrop and should be worn with the tapered end of the diamond pointing towards the wearer. There is dissimilarity in proportions of pear cuts. Though it is totally at the discretion of the wearer, we recommend a length to width ratio of 1.5-1.75 to maximize light return.
The marquise cut is oval with tapered ends with two points that are diametrically opposite to each other. Marquise diamonds vary in width, but we strive for symmetry between the two halves of our marquise diamonds. Because of their length and narrowness, marquise diamonds create an illusion of a larger size.
Rectangular in shape, baguette diamonds are similar to emerald cuts except they do not have clipped corners, and are narrower than emerald cuts. They were extremely popular during the deco era, but are still often used as accent stones next to larger diamonds.
Rose cut diamonds are unlike any other shape offered by Ada Diamonds. They are dome-shaped with a rounded top and a completely flat bottom, which makes them easily set necklaces, cuff links, and stud earrings. Rose Cuts were very popular in the 18th and 19th century, but fell out of favor in the early 20th century as the dimensions of the Round Brilliant were perfected.