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Education›Lab Grown Diamond Guidance›Cushion Cut Diamond — The Complete Guide
Lab Grown Diamond GuidanceFenora Guide9 min read

Cushion cut diamond — the complete guide.

The cushion cut diamond combines a square or rectangular outline with rounded corners and brilliant-cut faceting — creating a warm, romantic stone with vintage character. This guide covers everything about the cushion cut.

01

What makes the cushion cut distinctive

The cushion cut is a square or slightly rectangular diamond with rounded corners — like a pillow or cushion, which gives it its name. It is a brilliant cut, meaning the facets are triangular and kite-shaped rather than rectangular steps. The cushion cut is older than the round brilliant — its origins lie in the old mine cut of the 18th and 19th centuries — and it carries a warmth and vintage character that the more precisely optimised round brilliant does not.

The cushion cut is available in two main variants at Fenora: standard cushion (larger facets, chunkier light performance, closer to the original old mine cut character) and cushion modified brilliant (smaller facets, more sparkle, more like a round brilliant in a cushion outline). A third variant — elongated cushion — is covered in its own guide.

Key cushion cut characteristics
  • Available in square (1.00–1.10 L:W) or slightly elongated (up to 1.20) formats
  • Two faceting variants: standard cushion and cushion modified brilliant
  • Warm, vintage-adjacent character — different from the clean precision of round or emerald cut
  • Suits halos particularly well — the cushion outline in a cushion-shaped halo is very cohesive
  • Available in all 15 sizes at Fenora
02

Standard cushion vs cushion modified brilliant

Standard CushionCushion Modified Brilliant
Facet patternLarger, more open facets — closer to old mine cutSmaller additional facets in the pavilion — more sparkle
Sparkle characterChunky, defined flashes — warmer and more romanticBrighter, more numerous smaller flashes — more brilliant
Visual characterVintage, romantic, distinctive — less like a round brilliantMore contemporary — more similar to round brilliant in a cushion outline
Best forBuyers who value the vintage character and warmth of the original cushion aestheticBuyers who want maximum sparkle in a cushion shape
Fire (colour dispersion)Higher — more colour flashes visibleLower — more white light return
03

Cushion cut proportions

ProportionSquare CushionSlightly Elongated Cushion
Length-to-width ratio1.00–1.101.10–1.20
Depth %58–67%58–67%
Table %53–65%53–65%
PolishExcellentExcellent
SymmetryExcellentExcellent
04

Settings for cushion cut

Best settings for cushion cut
  • 4-prong solitaire — the rounded corners of the cushion are well suited to 4-prong settings. The prongs sit at the four corners without competing with the stone outline
  • Cushion-shaped halo — a halo that follows the cushion outline (square with rounded corners) creates a very cohesive result. A circular halo around a cushion looks slightly mismatched
  • Split shank — the cushion suspended between two band strands is elegant and contemporary
  • Pavé band — continuous pavé extending the cushion's warmth through the band
Does the cushion cut have a bow tie effect?
Standard cushion cuts rarely have a bow tie. Elongated cushions can develop one. For standard square or near-square cushions, bow tie is not a significant concern.
Does the cushion cut hide colour well?
Yes — the brilliant faceting of the cushion cut hides colour effectively. An H or I colour cushion looks white in most settings, particularly in yellow or rose gold.
Melbourne client care · Made in Surat

Choosing a cushion cut diamond? Ask Yash Chandpara.

Book a free online consultation. Yash Chandpara shows standard and modified brilliant cushion cuts side by side on screen.