Platinum radiant cut trilogy (3 stone) engagement rings, handmade to order by our family workshop in the Cotswolds and set with a diamond you choose yourself. The radiant cut combines the clean outline of an emerald cut with the fiery sparkle of a brilliant. A trilogy ring sets three diamonds side by side, often said to stand for your past, present and future.
The radiant cut diamond
The radiant has the cut corners of an emerald cut but brilliant facets inside, so it sparkles more than any other square or rectangular shape. The cut corners make it hard-wearing, and it comes square or elongated. The side stones are matched to the radiant centre diamond so the three sit in proportion.
Why a trilogy ring?
A trilogy, or 3 stone, ring sets a centre diamond between two smaller side stones. It gives a wider, fuller look across the finger than a solitaire, and the three stones are often said to stand for your past, present and future together.
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 radiant diamond
Our diamond search splits radiants into square and elongated. A ratio of about 1.00 to 1.05 gives a square; 1.20 to 1.35 is a popular rectangle. The brilliant facets hide small inclusions well, so SI1 clarity often looks clean.
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.
Explore More Engagement Rings
Other metals: 18ct White Gold · 18ct Yellow Gold · 18ct Rose Gold
Other styles: Solitaire · Halo · Bezel-Set · Diamond-Set Shoulder · Diamond-Set Band
Other diamond shapes: Round Brilliant Cut · Princess Cut · Oval Cut · Emerald Cut · Cushion Cut · Asscher Cut · Marquise Cut · Pear Shape · Heart Shape
See all: All Platinum Radiant Cut Engagement Rings · All Platinum Trilogy (3 Stone) Engagement Rings · All Platinum Engagement Rings · All Engagement Rings
Frequently Asked Questions
No. Both are brilliant cuts, but a radiant has cut corners, which make it tougher and softer-looking, and it can be square or rectangular. A princess is always square with sharp corners.
Yes. The side stones are chosen to suit the size and colour of your centre diamond, so the three look balanced together.
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. Returns are free within 30 days, and every order comes with a prepaid returns pack.