Oval vs Round Lab-Grown Diamond: Which Should You Choose?

Sapporo oval lab-grown diamond engagement ring by Beylora

Choose an oval if you love an elongated outline, or a round if you prefer a circular one. Then compare the actual dimensions, the individual diamond's cut information, the setting and the complete price. Those details make the choice more useful than a rule that one shape always looks bigger or sparkles more.

Explore oval lab-grown engagement rings and round lab-grown engagement rings to see which designs you prefer.

Which looks bigger, an oval or a round diamond?

Carat measures weight, while millimeter measurements describe dimensions. An oval's length can create an elongated look on the finger, but two diamonds of the same carat weight can have different proportions. Compare the actual length and width, rather than treating an example measurement as a guarantee for every stone.

The setting and your ring size also affect how the finished ring looks on your hand. Use our US ring sizing guide to establish the size you need, and ask for the available specifications of the ring you are considering.

Which sparkles more?

Both oval and round brilliant diamonds can have lively sparkle. Shape is only part of the picture: the individual diamond's cut and the lighting affect its appearance. D color and VVS2 clarity are separate grades, so those letters alone do not establish which of two stones will have the light performance you prefer.

IGI explains how shape, proportions and craftsmanship are assessed in its cut-grading guide. Compare the available information for the actual diamond, as well as the design.

What should you know about an oval's bow-tie?

The term bow-tie describes a darker area across the center of some elongated diamonds. IGI includes bow-tie assessment among the shape-specific checks in its fancy-shape cut process. A color or clarity grade does not, by itself, tell you how visible that area will be in the diamond you receive.

Use the product images and any interactive 3D views to compare the setting and outline. These design views do not verify the appearance of the individual center diamond that will be set in your ring. Ask us what additional information is available for a particular ring before ordering.

How do cut, polish and symmetry grades differ?

Read the individual IGI report. IGI offers overall cut grading for round brilliants and fancy shapes, including ovals. Polish and symmetry describe finish and facet alignment; they do not replace an overall cut grade. If the report does not list an overall cut grade, do not infer one.

Beylora's lab-grown center-diamond standard is D color, VVS2 or better clarity, Excellent polish and Excellent symmetry. Our IGI report guide explains which specifications the center's report covers.

Does an oval or a round cost more?

Compare the complete price for the configurations you are considering. The design, carat size and metal matter; knowing only the shape does not give you the finished-ring price. At Beylora, the center diamond, any accent stones in the design and the setting are included in the listed configuration price.

For a firm budget, start with the designs currently included in the under-$2,000 collection. Its $1,800 configurations are complete 2-carat lab-grown rings in 14k white or yellow gold, before tax. Optional $300 Rush would bring a $1,800 ring to $2,100 before tax. The 2-carat cost guide explains the comparison.

How will the ring work with a wedding band?

Look at the setting as well as the center's outline. The height and shape of the engagement-ring setting affect the space available beside a wedding band. Our Build a Set page helps you compare the designs together; ask us about the specific pairing if a flush fit is important to you.

What should you check before choosing?

  • The outline you prefer, the actual dimensions and your ring size.
  • The individual center diamond's IGI report and the information available about its appearance.
  • The complete price for your chosen design, carat size and metal.
  • Your delivery deadline and the return terms.

Standard delivery is estimated at about 30 days from ordering; optional $300 Rush is about 15 days. Eligible change-of-mind returns within 30 days of arrival have a 20% restocking deduction, and the Rush fee is nonrefundable for those returns. Damaged, faulty or incorrect arrivals are repaired, replaced or refunded in full without a fee. Read the full return conditions before ordering.

See the oval designs or see the round designs.