18ct rose gold princess 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 princess cut is a square diamond with pointed corners and a brilliant, criss-cross sparkle. A trilogy ring sets three diamonds side by side, often said to stand for your past, present and future.
The princess cut diamond
The princess cut is a square brilliant: crisp straight sides, sharp corners and a lively, criss-cross sparkle. It is the most popular fancy shape, and because more of the rough crystal is kept when it is cut, a princess often costs less than a round of the same weight. The side stones are matched to the princess 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 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 princess diamond
Look for a length-to-width ratio between 1.00 and 1.05 for a true square. The corners are the most delicate part of a princess cut, so each one is held by its own claw. A G to H colour and SI1 clarity give a clean, bright look for the money.
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.
Frequently Asked Questions
The stone itself is as hard as any diamond, but its sharp corners can chip if knocked. That is why every corner on our princess settings is protected by its own claw.
Yes. The side stones are chosen to suit the size and colour of your centre diamond, so the three look balanced together.
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.