If you have spent any time on a bridal Pinterest board, you already know the shape everyone is asking for. Oval.
It is the cut behind one of the most talked-about engagement rings of the last decade: Hailey Bieber's. Her original ring, a custom oval diamond estimated between six and ten carats set on a slim 18ct gold band, has been quietly shaping engagement ring trends since 2018. When she and Justin upgraded to an even more elongated oval a few years later, the shape's popularity only grew.

I get asked about this ring more than any other. So I want to break down why the oval cut works, and show you what we currently have in the studio if you are chasing that same look without the celebrity price tag.
Why the oval cut is having a moment
A few reasons keep coming up when I talk to customers about oval diamonds.
It looks bigger than it is. The elongated shape spreads the same carat weight across more visible surface area, so an oval reads larger on the hand than a round diamond of the same weight.
It elongates the finger. This is the effect stylists and jewellers talk about most. The shape has a slimming, flattering line that round or cushion cuts do not give you in quite the same way.
It is a solitaire that does not need help. No halo, no side stones needed. Just one stone on a clean band, which is exactly the quiet-luxury look most people are asking for right now.
Oval engagement rings at THERESHEIS.jewels
Every stone we set is IGI certified lab-grown diamond, and every band is solid gold. Not gold plated, not vermeil. Solid 9ct or 18ct, so it is built to be worn every day and passed down eventually.
Here is what we currently have in oval cut:
- 1ct Oval Cut Diamond Ring, 9ct Yellow Gold — £925. The most accessible way into this shape, and honestly the one most people picture when they think "solitaire."
- 1ct Oval Cut Diamond Ring, 18ct Gold (White or Yellow) — from £1,850. Available in a full ring size run, D/E colour, VS clarity.
- 2ct Oval Cut Diamond Ring, 9ct Yellow Gold — £1,595. This is the carat weight where the oval really starts to stretch and catch the light.
- 2ct Oval Cut Diamond Ring, 18ct Gold (White or Yellow) — from £2,759.
- 3ct Oval Cut Diamond Ring, 9ct or 18ct Gold — from £1,995. Getting closer to the scale of Hailey's original ring, at a fraction of the cost thanks to lab-grown.
- 4ct Oval Cut Diamond Ring, 18ct White Gold — £3,950. A genuine statement piece.
Every listing shows the exact carat weight, the colour and clarity grade, and the gold karat so you know precisely what you are buying.
Not set on oval? A few other cuts worth knowing
Oval is not the only shape doing well right now. If you want something with a similar quiet-luxury feel but a different silhouette, our emerald cut rings (from £2,495 up to a 5ct, 18ct white gold piece at £4,250) give you long, clean lines with less sparkle and more presence. Our radiant cut ring brings a warmer, more faceted sparkle in yellow gold. And the classic round brilliant solitaire, starting at £925 in 9ct yellow gold, is still the most requested shape for a reason. It is the one that never needs explaining.

Solid gold, lab-grown diamonds, always IGI certified
A quick note on why we build our engagement rings this way. Solid gold does not wear thin, tarnish, or flake the way plated pieces do, so an engagement ring in 9ct or 18ct gold is meant to be worn daily for decades. Lab-grown diamonds are chemically, physically, and optically identical to mined diamonds, but they let us offer a larger, higher-clarity stone for the same budget. Every diamond we set comes with IGI certification, so you have independent proof of exactly what you are wearing.
Want something specific?
If none of the above is quite it, that is completely normal. A lot of people come to me with a screenshot of a ring they love, a Pinterest board, or just a rough idea of a shape and a budget.
If you have something specific in mind, whether it is a carat weight, a particular gold tone, or a design you have not seen anywhere else, message me directly and I will help bring it to life.