Oval Cut Lab Grown Diamond Engagement Rings

Oval cut lab grown diamonds spread their weight along the finger rather than into depth, so a one-carat oval reads visibly larger than a one-carat round.

Buying Guide

Oval is the shape we recommend first to anyone who wants a round brilliant’s light behaviour with more visible size for the same spend. It is a brilliant cut, so it keeps most of the round’s sparkle and its ability to hide small inclusions, and it costs less per carat because the elongated outline uses the rough crystal more efficiently.

Two things are worth checking on any oval and neither appears on a grading report. The first is the bow-tie — the dark band across the centre where light passes straight through instead of reflecting back. Every oval has some; we reject stones where it dominates the table. The second is the length-to-width ratio: most buyers settle between 1.35 and 1.50, narrower reading elegant and wider reading larger. A low-set oval often wants a contoured band, which is worth deciding before the ring is made. Everything here is made to order with free worldwide shipping and 65-day returns.

Frequently Asked Questions

What should I check on an oval diamond?

Two things: the bow-tie and the length-to-width ratio. Every oval has some dark band across the centre; a well-cut stone keeps it faint. Ratio is taste, but most buyers settle between 1.35 and 1.50 — narrower reads elegant, wider reads larger. We reject stones where the bow-tie dominates the table.

Is an oval a good alternative to a round diamond?

It is the most popular alternative, and for a practical reason. An oval is a brilliant cut, so it keeps most of the round’s light behaviour while costing less per carat and showing more surface area for the same weight. We carry 165 oval designs across the range, and it is the shape that has grown fastest in our range over the last few seasons.

What is the difference between a cushion and a radiant cut?

Cushion has softly rounded corners and a broad, pillowy scintillation that reads warmer and more antique. Radiant has cropped straight corners and brilliant faceting underneath, so it flashes harder and looks more modern. We carry 129 cushion and 78 radiant pieces across the range; shoppers who like the outline of one often prefer the light behaviour of the other.

Which lab grown diamond shape is most popular right now?

Round is still the most requested — 837 of our pieces across the range are round — followed by princess at 204 and emerald at 169. Oval has grown fastest over the last few seasons and now sits at 165 pieces. We would not choose on popularity alone; shape is the one decision on a ring that is purely about taste.

Which lab grown diamond shape looks largest for the carat?

Elongated shapes look largest. Oval, marquise and pear spread their weight along the finger rather than down into the stone, so a 1-carat oval reads close to a 1.2-carat round. Round and asscher carry more weight in depth and read smallest per carat. If visual size is the priority, we recommend starting with oval or marquise.

  • IGI certification Every Beyond Carat diamond is graded by IGI, and the report ships in the box.
  • Flexible payments Affirm monthly payments and Shop Pay Installments at checkout.
  • Returns 65-day returns, measured from the date your order ships. Free prepaid, insured UPS return label on U.S. orders. Free ring resizing for a full year.
  • Warranty Lifetime manufacturing warranty covering defects in materials and workmanship.

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