Oval

What defines the cut

An oval is a brilliant-faceted diamond with an elliptical outline. It carries essentially the round brilliant's facet pattern, stretched along one axis, which is why a well-cut oval can show comparable brilliance to a round while looking noticeably larger for the same carat weight.

The bow tie

Almost every oval (and every elongated brilliant shape — pear, marquise, cushion) shows some degree of "bow tie": a darker, bowtie-shaped shadow across the centre of the stone caused by the viewer's own head blocking light at that facet angle. A faint bow tie is normal and often adds character; a strong, obvious one that doesn't shift with movement is a genuine cut-quality issue worth avoiding.

Length-to-width ratio

Ratio is a matter of taste more than correctness. Roughly 1.30–1.40 reads as a "classic" oval; 1.50 and above reads noticeably more elongated and slender. There's no single "correct" ratio — it's worth viewing a few in person or on video before committing to a preference.

Buying considerations

• Face-up size is not reliably predicted by carat alone for ovals the way it is for round — two 1ct ovals with different ratios and depths can look meaningfully different in size.
• Check bow tie severity specifically, ideally on video under normal indoor lighting, not just a lab photo.
• Colour tends to concentrate slightly toward the pointed ends on lower colour grades — worth checking in person near the G–I range.

Jewellery suitability

Ovals suit both classic north-south solitaires and east-west (sideways) settings, which round brilliants can't offer. They photograph well and read larger than their carat weight, making them popular for both engagement rings and statement earrings.

Related comparisons

Oval is frequently compared against round (better face-up size, less pricing premium, but bow tie risk) and against elongated cushion or moval (softer, less pointed outline vs oval's cleaner ellipse).