Diamond shape guide

Radiant Diamond Guide

Clipped corners with brilliant-style sparkle.

What makes a good radiant?

Radiants vary dramatically. Some have broad, organized flashes; others show a crushed-ice pattern. Neither is automatically better—compare movement and brightness. Decide first whether you want chunky “block” scintillation or a finer crushed-ice texture, then shortlist stones that consistently deliver that look in video.

Length-to-width ratio

Radiants run from near-square (~1.00–1.05) to clearly rectangular (~1.15–1.30+). Square radiants read like brilliant princess cousins; elongated ones compete with ovals for finger coverage but keep cropped corners. Ratio is a style choice, not a quality grade. Use report measurements to sort candidates, then judge whether the outline looks intentional rather than accidentally rectangular from uneven cutting.

Because radiant pavilion styles differ, two stones with similar L/W and depth can still perform differently. Millimeter face-up size plus video beats any single proportion recipe.

Color and clarity

Brilliant-style radiant faceting generally hides inclusions better than step cuts, so many buyers can relax clarity one notch versus an emerald of the same size—still inspect dark centers. Body color on elongated radiants can show a bit more toward the ends than on a round; white-metal settings make mid grades more honest to evaluate.

Crushed-ice patterns can camouflage small inclusions but also mute large flashes. If clarity is your stretch budget, prefer that texture only after you confirm the stone still looks lively, not milky.

Setting considerations

Cropped corners are more durable than princess points, yet they still benefit from solid corner prongs or a bezel. Elongated radiants in east–west or classic north–south mounts change how much outline you see—mock up the orientation before ordering a custom head.

Before you buy

• Pick square vs elongated intentionally; do not mix them in one shortlist.
• Decide brilliant-block vs crushed-ice look, then compare only within that family.
• Check corner symmetry and whether brightness stays even as the stone turns.
• Compare face-up mm at similar carat; avoid deep stones that look small.
• Confirm report, return policy, and corner protection in the chosen setting.

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