Cut Library — Comparison
Cushion vs Round Brilliant
Cushion
A cushion is a square or rectangular shape with rounded corners and sides, giving it a soft, pillow-like outline; the modern cushion brilliant applies contemporary brilliant faceting to that outline.
Full Cushion guide →Round Brilliant
The round brilliant is the standard modern diamond cut: a circular outline faceted specifically to maximise the return of light back to the eye.
Full Round Brilliant guide →| Attribute | Cushion | Round Brilliant |
|---|---|---|
| Outline | Square to rectangular, rounded corners | Circular |
| Faceting | Modern brilliant (crushed ice or chunky facet styles vary) | Modern brilliant |
| Typical use | Engagement rings, especially halo settings | Any diamond jewellery |
| Availability | Widely available | Most widely available cut |
| Common issue | Windowing in shallow-cut stones | — |
| Typical L:W ratio | 1.00 (square) to 1.20+ (rectangular) | — |
| Culet | — | Usually none, or a minute point |
| Crown angle | — | Typically 34–35° |
| Facet count | — | 57 or 58 (with culet) |
Next steps
Browse either cut on Chaos
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