How to choose a cushion diamond

Buying Guide

The cushion cut is a type of modified brilliant cut, meaning it maintains the same facet structure designed to maximize brilliance while showcasing a different silhouette. In this case, the classic round brilliant has been softened into a square or rectangular shape with rounded corners—resembling a cushion or pillow. As a member of the ‘fancy cut’ family, the cushion cut offers a unique alternative to traditional shapes, delivering exceptional sparkle with a romantic, vintage-inspired aesthetic.

• Characteristics

  Length-to-Width Ratio:
  
  Cushion cut diamonds generally range from 1.00 to 1.05 for a classic square appearance, while 1.10 to 1.20 ratios produce a more elongated, rectangular look. Your choice depends largely on personal style and how the shape flatters the wearer’s hand.

  Facets:
  
  Cushion cuts typically have 58 to 64 facets, depending on whether the stone is a standard or modified cushion brilliant. These facets can create either a more defined “chunky” brilliance or a softer “crushed ice” effect, each offering a distinct type of sparkle.

  Facet Pattern (Crushed Ice vs. Chunky):
  
  Unlike some other cuts, cushion diamonds can vary significantly in how they reflect light. The “chunky” pattern shows broader flashes of light, while the “crushed ice” pattern creates a shimmering, more scattered brilliance. Neither is better—just different aesthetics to suit your preference.

  Depth and Pavilion:
  
  Cushion cut diamonds often have deeper pavilions, which can enhance sparkle but may also hide some weight. Look for well-proportioned stones to ensure maximum light performance without sacrificing face-up size.

•  Buying Tips

  Cut Quality:
  
  Because cushion cuts don’t receive standardized cut grades from most labs, pay close attention to overall symmetry, depth, and table percentages. A well-cut cushion will have balanced proportions and excellent light performance, whether you prefer a “chunky” or “crushed ice” look.

  Colour and Clarity:
  
  Cushion cuts tend to show more body colour due to their deeper pavilion, so opt for a colour grade of H or higher for a bright, white appearance—especially in white metal settings. In terms of clarity, VS2 or better is typically a safe choice, though SI1 stones can be eye-clean if well-selected.

  Settings:
  
  Cushion cut diamonds pair beautifully with halo, solitaire, and vintage-style settings. If the stone has slightly rounded corners, a four-prong setting works well; for more square cushions with softened edges, double-claw or bezel settings can enhance both protection and aesthetics.

• Popular Settings

  Solitaire:
  
  A classic solitaire setting allows the cushion cut diamond’s soft shape and vintage charm to shine. This minimal design emphasizes the stone's natural beauty and is perfect for those who prefer timeless elegance.

  Halo:
  
  A halo of smaller diamonds surrounding the cushion cut enhances its sparkle and creates the illusion of a larger center stone. This setting also complements both square and elongated cushion shapes beautifully.

  Vintage-Inspired:
  
  Cushion cuts pair exceptionally well with antique-style settings featuring milgrain details, filigree, or side stones. These designs highlight the diamond’s old-world romance and charm.

  Bezel Setting:
  
  For a sleek, contemporary look, a bezel setting encases the cushion cut in a smooth metal rim. This style offers extra protection and a clean, modern silhouette.

  Three-Stone:
  
  Framing the cushion cut with two side stones—such as tapered baguettes or smaller cushions—adds depth and symbolism, representing the past, present, and future of a relationship.