18ct rose gold marquise 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 marquise is a long, boat-shaped diamond with two points. It looks larger than any other shape of the same weight. A trilogy ring sets three diamonds side by side, often said to stand for your past, present and future.
The marquise cut diamond
The marquise is a long brilliant cut with a point at each end. It has the largest face-up area of any diamond shape for its weight, so it looks big for its carat weight and makes the finger look long and slender. It has a bold, vintage character. The side stones are matched to the marquise center diamond so the three sit in proportion.
Why a trilogy ring?
A trilogy, or 3 stone, ring sets a center 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 color 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 marquise diamond
A ratio of 1.75 to 2.25 gives the classic shape; keep the two halves even. Like the oval, a marquise can show a bow tie, so check the photos. The two points are the delicate part, and our settings protect each one with a claw.
Choose your own diamond
Every ring is set with a center 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.
Handmade by a family jeweler
We have been making jewelry in Bourton-on-the-Water since 1969 and are members of the National Association of Jewelers. Your ring is made to order in 100% recycled metal, hallmarked, and ready in 3 to 4 weeks, with free UK delivery and free returns within 30 days.
Frequently Asked Questions
The points are the thinnest part of the stone, so they can chip if knocked. Our marquise settings hold each point in a claw to protect it.
Yes. The side stones are chosen to suit the size and color of your center diamond, so the three look balanced together.
No. The color 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. Returns are free within 30 days, and every order comes with a prepaid returns pack.