Are Diamond Shape And Diamond Cut Interchangeable?
Technically, no. Conversationally, yes. While shape and cut mean distinctly different things, it's common for customers, jewelers and other industry professionals to use the terms interchangeably. From a textbook perspective, shape refers to the outline of a diamond and the cut of a diamond
refers to the facets, proportions, dimensions and overall reflective qualities that make a diamond sparkle.
What Is The Length-To-Width Ratio Of A Diamond, And Why Does It Matter?
Diamond length-to-width ratios are dimensions that are widely considered preferable for each shape thanks to their pleasing symmetries and broad appeal. You can enter your desired parameters using the length-to-width filter in our diamond search
, or you can look at the length-to-width ratio on the product page of any diamond on our site, listed under diamond characteristics. Below, you’ll find examples of the preferred length-to-width ratio for each diamond shape.
The Relationship Between Diamond Shape And Diamond Color
Some diamond shapes mask color to varying degrees because of how the shape interacts with light. For example, round brilliant diamonds reflect more light, which means more color is masked. Learn more about how shape impacts color
The Relationship Between Diamond Shape And Clarity
The unique characteristics of some fancy-shaped diamonds require a higher clarity grade than others to bring out their brilliance or to hide inclusions. Learn more about how shape impacts clarity
Shape is an important consideration when buying a diamond
as it directly influences price. Round diamonds tend to be priced higher than other shapes because of their incredible brilliance, market demand, and increased manufacturing costs. Non-round diamonds are referred to as fancy shapes. Blue Nile offers nine fancy options, including princess, emerald, Asscher, cushion, marquise, radiant, oval, pear and heart.
Popular Diamond Ring Shapes
Round Brilliant Diamond
For almost 100 years, diamond cutters have been using advanced theories of light behavior and precise mathematical calculations to optimize the fire and brilliance in a round diamond. Round diamonds will typically give you more flexibility in terms of balancing cut, color, and clarity grades while still getting the sparkle you want. To maximize the brilliance of a traditional round diamond, we recommend an Ideal cut with Excellent polish and symmetry. For a round diamond with superior sparkle, consider an Astor by Blue Nile™ Diamond
This is our most popular non-round diamond. Its beautiful brilliance and unique cut makes it a favorite for engagement rings. This shape has pointed corners and is traditionally known as a square-cut diamond, although they vary in how square or rectangular they are. The princess-cut also tend to show slight color in its corners, so you may want to budget for a higher color grade than you'd need when buying a round.
Recommended Length x Width Ratio