Round vs Oval Diamonds

Round and oval are the two most-requested diamond shapes for engagement rings, and they're closely related — an oval is essentially a round brilliant stretched into an ellipse. The result is two stones with similar fire but a very different presence on the hand.

	Round	Oval
Brilliance	The benchmark — 57–58 facets tuned for maximum sparkle	Nearly as brilliant; can show a faint central "bow-tie" shadow
Size for the carat	Compact outline — looks its weight	Reads larger than a round of the same carat
Effect on the finger	Classic and balanced	Elongates and slims the finger
Hides color & inclusions	The most forgiving of any shape	Forgiving, though the points can concentrate color slightly
Price per carat	Highest — the most rough is lost in cutting	Typically 10–20% less than a comparable round
Best for	Purists who want the most sparkle and a timeless look	A larger look and a flattering, modern silhouette

Which should you choose?

Choose round for the most sparkle and a never-dated classic; choose oval for a larger-looking, finger-lengthening stone at less per carat. Both are durable everyday shapes with no fragile corners.

Round

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RoundLabIGI

0.09 ct · SI1 · VG

Round Diamond

$70

RoundLabIGI

0.08 ct · VS2 · VG

Round Diamond

$71

RoundLabIGI

0.09 ct · SI1 · VG

Round Diamond

$72

RoundLabIGI

0.09 ct · SI1 · GD

Round Diamond

$72

Oval

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OvalLabIGI

0.23 ct · D · SI1 · -

Oval Diamond

$84

OvalLabIGI

0.27 ct · G · VS1 · -

Oval Diamond

$89

OvalLabIGI

0.27 ct · G · VVS2 · -

Oval Diamond

$91

OvalLabIGI

0.27 ct · G · VVS2 · -

Oval Diamond

$91

Round vs Oval — common questions

Does an oval diamond look bigger than a round?: Yes — the weight is spread into an elongated outline, so an oval of the same carat generally looks larger face-up than a round, and the elongation also slims the finger.
Is an oval cheaper than a round diamond?: Usually. A round brilliant wastes more of the rough crystal in cutting, so rounds carry the highest price per carat of any shape; a comparable oval is typically 10–20% less.
Which sparkles more, round or oval?: A round brilliant is the sparkle benchmark, but a well-cut oval is very close. The main difference is the oval's possible bow-tie — a faint dark band across the center that varies stone to stone, so judge each oval individually.

Keep comparing

Round

Oval

Brilliance

The benchmark — 57–58 facets tuned for maximum sparkle

Nearly as brilliant; can show a faint central "bow-tie" shadow

Size for the carat

Compact outline — looks its weight

Reads larger than a round of the same carat

Effect on the finger

Classic and balanced

Elongates and slims the finger

Hides color & inclusions

The most forgiving of any shape

Forgiving, though the points can concentrate color slightly

Price per carat

Highest — the most rough is lost in cutting

Typically 10–20% less than a comparable round

Best for

Purists who want the most sparkle and a timeless look

A larger look and a flattering, modern silhouette

Round vs Oval — common questions

Does an oval diamond look bigger than a round?

Yes — the weight is spread into an elongated outline, so an oval of the same carat generally looks larger face-up than a round, and the elongation also slims the finger.

Is an oval cheaper than a round diamond?

Usually. A round brilliant wastes more of the rough crystal in cutting, so rounds carry the highest price per carat of any shape; a comparable oval is typically 10–20% less.

Which sparkles more, round or oval?

A round brilliant is the sparkle benchmark, but a well-cut oval is very close. The main difference is the oval's possible bow-tie — a faint dark band across the center that varies stone to stone, so judge each oval individually.