Platinum oval cut halo engagement rings, handmade to order by our family workshop in the Cotswolds and set with a diamond you choose yourself. An oval diamond has the sparkle of a round but looks larger for its weight, and its long shape flatters the finger. A halo surrounds the centre diamond with a ring of smaller diamonds for extra sparkle and a bigger look.
Bestsellers in this category
The oval cut diamond
The oval is a stretched round brilliant, so it has much the same sparkle. Its long shape spreads the weight across a bigger surface, so an oval looks larger than a round of the same carat weight and makes the finger look longer and slimmer. The halo follows the outline of the oval diamond, so the shape reads clearly from across a room.
Why a halo?
A halo frames the centre diamond with a ring of small diamonds. The extra sparkle makes the centre stone look larger, so it is a good way to get a big look for less. Paired with a diamond-set band, it gives the most sparkle of all.
Why platinum?
We use 950 platinum, hallmarked in the UK. It is about 95% pure, so it is naturally white all the way through and never needs re-plating. It is heavier than gold and very hard-wearing: rather than wearing away, the metal moves over time and takes on a soft satin look, which a quick polish brings back to a high shine. It is also the best choice if you have sensitive skin.
Choosing your oval diamond
Most people prefer a length-to-width ratio of 1.35 to 1.50. Many ovals show a darker "bow tie" across the middle; a little is normal, so it is worth looking closely at the stone's photos before you choose. A G to H colour and SI1 clarity suit most budgets.
Choose your own diamond
Every ring is set with a centre diamond you choose yourself, natural or lab-grown, from our live stock. Each stone has its grading report, and the ring page shows the finished price before you buy.
From our workshop to your door
Each ring is made for you in our Cotswolds workshop in 3 to 4 weeks, in 100% recycled metal, and independently hallmarked. We have made fine jewellery since 1969. UK delivery is free, every order comes with a prepaid returns pack, and returns are free within 30 days.
Explore More Engagement Rings
Other metals: 18ct White Gold · 18ct Yellow Gold · 18ct Rose Gold
Other styles: Solitaire · Trilogy (3 Stone) · Bezel-Set · Diamond-Set Shoulder · Diamond-Set Band
Other diamond shapes: Round Brilliant Cut · Princess Cut · Emerald Cut · Cushion Cut · Asscher Cut · Marquise Cut · Pear Shape · Heart Shape · Radiant Cut
See all: All Platinum Engagement Rings · All Engagement Rings
Frequently Asked Questions
A darker band across the middle of the stone, caused by the way light passes through an elongated shape. Almost every oval has one to some degree. Check the diamond's photos: a faint bow tie is fine, a strong dark one is best avoided.
Yes. The ring of small diamonds adds to the spread of the centre stone, so it looks noticeably larger than it would on its own.
All precious metals mark with wear. Platinum moves rather than wearing away, so it keeps its weight and holds the diamond securely. Over time it takes on a soft satin finish, and we can polish it back to a bright shine whenever you like.
Yes. Every ring can be set with a natural or lab-grown diamond from our live stock. Both are real diamonds; lab-grown stones cost less for the same size and grade.