Oval Engagement Rings: The Complete Guide
Oval is the modern romantic, the shape for someone warm and a little more adventurous, who loves classic elegance but isn't interested in playing it completely safe. It's the shape most people reach for when they want a stone that looks bigger than its carat weight suggests, without giving up the brilliance of a round cut. This guide covers why buyers choose it, the one real trade-off worth knowing before you buy (the bow tie effect), what it costs, and which of our 23 oval styles fit different budgets, plus every question we get asked before someone buys one.
Oval: The Modern Romantic
Choose this cut if the personality behind the proposal is warm and a little bolder than round allows, someone who wants brilliance without playing it completely safe. Its elongated silhouette shows more surface area than a round stone of identical weight, so a 1 carat oval consistently looks bigger on the hand. It also has a softening, finger-lengthening effect that round and square cuts don't offer, which is a large part of why it's become one of the fastest-growing choices in recent years.
It's a strong pick for anyone who wants brilliance close to a round cut but a silhouette that feels a touch more distinctive. It doesn't suit everyone though, since the elongated silhouette can show an optical effect worth understanding before you buy, covered below.
The bow tie effect, and how to avoid it
Elongated cuts like this one can show a dark shadow across the centre of the stone, called the bow tie effect, caused by the cutter's own reflection blocking light in that zone. According to the Gemological Institute of America (GIA), this is a known characteristic of elongated fancy shapes generally, not a flaw specific to any one cutter or stone. It's a byproduct of the elongated shape and how the facets are angled. A well cut stone minimises it to the point where it's barely noticeable; a poorly cut stone can show an obvious dark band running across the middle.
The way to avoid it is the same advice that applies to cut quality generally: prioritise a well proportioned, symmetrical cut over carat weight or clarity grade. Every stone in this collection is set by hand with this in mind, so if a bow tie is something you're specifically worried about, ask our team before you buy and we'll point you to the cleanest option in your budget.
How much does this shape cost
It typically costs less per carat than a round stone of the same weight, because less of the rough diamond is wasted cutting an elongated shape compared to a circular one. Combined with its larger visual footprint, this is why it's often the pick for buyers who want the biggest possible look for their budget. Setting style still moves the price: a plain prong or bezel solitaire is the most affordable way to wear it, while a halo or pave band adds cost through extra stones and labour.
How it compares to round and other shapes
Compared with round, this shape reads larger for the same carat weight and typically costs less per carat, but trades a small amount of raw sparkle for that size. Compared with pear or marquise, it's the more conservative elongated option, without a pointed tip to worry about chipping. For the full side by side breakdown across all eight cuts we carry, see our Engagement Ring Shape Guide.
Who this shape suits best
It suits anyone who wants a stone that photographs and reads as larger than its actual carat weight, and anyone drawn to a softer, more elongated silhouette than round offers. It's also a strong pick if the wearer has shorter fingers, since the elongated silhouette has a visual lengthening effect. If maximum brilliance matters more to you than perceived size, a round cut from our Round Engagement Rings guide may suit better.
What carat weight looks like on the hand
Because it's elongated rather than circular, an oval stone shows more visible surface area per carat than a round one, which is the whole reason it reads larger. A 1 carat oval typically measures around 7.7mm by 5.7mm, noticeably longer across the finger than a round stone of the same weight at roughly 6.4mm in diameter. That length is what creates the size illusion buyers are usually chasing with this shape.
Shop the styles
23 of our most-loved oval pieces, from plain solitaires to halo, hidden halo and bezel settings, are below. Every stone is a genuine lab grown diamond in 14K gold.
Browse the full oval collection
Choosing the right setting for you
A prong setting is the most classic way to wear this shape and exposes the most surface area to light. A bezel setting fully or partially wraps the stone, trading a small amount of brilliance for a smoother, snag-free profile that suits daily wear well. A halo setting, hidden or classic, adds surrounding diamonds to boost sparkle and make the centre stone appear even larger.
Band choice matters too. A plain tapered band keeps all the attention on the elongated centre stone, while a crossover, bypass or trio band adds visual texture around it. Every stone in this collection is a genuine lab grown diamond, chemically and optically identical to a mined one, so your setting choice changes the look, not the substance of the stone.
Caring for your ring after you buy it
The pointed-ish tips of an elongated stone like this one sit slightly more exposed than a round stone's edge, so a prong setting benefits from an occasional check to make sure nothing has loosened. For the full routine, see our guide on how to care for your engagement ring.
Frequently asked questions
What is an oval cut diamond? It's an elongated, brilliant-cut diamond shaped like a stretched circle. It's faceted similarly to a round brilliant, which is why it carries close to the same level of sparkle despite its different silhouette.
How big is a 1 carat oval diamond? A 1 carat stone in this shape typically measures around 7.7mm by 5.7mm, noticeably longer across the finger than a round diamond of the same weight, which is roughly 6.4mm across.
Is an oval or round engagement ring better? Round offers slightly more brilliance and is the easier shape to resize or reset later. Oval reads larger for the same carat weight and has a softer, more elongated look. Neither is objectively better, it comes down to whether sparkle or perceived size matters more to you.
What is the bow tie effect on an oval diamond? It's a dark shadow that can appear across the centre of the stone, caused by the cutter's own reflection blocking light in that zone. A well cut stone minimises it significantly; it's a normal characteristic of elongated shapes, not a flaw.
Does this shape cost more or less than round? Less, typically. Cutting an elongated shape wastes less of the rough diamond than cutting a round one, so it usually costs less per carat at the same weight, on top of reading larger visually.
Can I get this shape in rose or white gold? Yes, every setting in this collection is available in Lucira's 14K gold options, so your choice of shape doesn't limit which metal tone you choose.
Is an oval engagement ring right for you
If you want a stone that looks bigger for its weight, costs a little less per carat than round, and has a softer, more elongated silhouette, this is the shape to choose. Just make sure whichever piece you pick is well cut, so the bow tie effect stays minimal rather than distracting. Explore the full collection below, or head back to our Engagement Ring Shape Guide to compare it against the other seven shapes.
