18ct rose gold round brilliant diamond engagement rings, handmade to order by our family workshop in the Cotswolds and set with a diamond you choose yourself. The round brilliant is the most popular diamond shape, cut with 57 facets for the most sparkle of any diamond. 18ct rose gold has a soft, romantic pink colour that flatters every skin tone and gives a classic design a modern feel.
Bestsellers in this category
The round brilliant diamond
The round brilliant is cut for maximum sparkle. Its 57 facets are arranged to send as much light as possible back out of the top of the stone, which is why it hides small inclusions and a touch of colour better than any other shape. It suits every setting and every hand, and will never date.
Why 18ct rose gold?
18ct rose gold is 75% pure gold, warmed to a soft pink by a little copper in the alloy. It is not plated, so the colour never wears off, and it is slightly harder than yellow gold. Some of our rose gold designs set the diamond in a white platinum head for the whitest look, with the pink band around it. For a lower price, see our 9ct rose gold engagement rings.
Choosing your round diamond
Cut grade matters more on a round diamond than on any other shape, because the round is graded for cut. Choose Excellent or Very Good for the best sparkle. Because rounds hide colour and inclusions well, a G to H colour and SI1 clarity often looks just as good face up as a far pricier stone.
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.
Made to order in the Cotswolds
Every ring is made to order in our family workshop in Bourton-on-the-Water, where we have made fine jewellery since 1969. We use 100% recycled precious metal, every ring is independently hallmarked, and each one takes 3 to 4 weeks. Delivery is free across the UK, and returns are free within 30 days.
Frequently Asked Questions
Excellent, or Very Good if you want to put more of your budget into size. Round diamonds are the only shape with a full cut grade, and it has the biggest effect on how much they sparkle.
No. The colour comes from the copper in the alloy, all the way through the metal, so there is no plating to wear off. If anything, rose gold warms slightly with age.
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.