A trilogy engagement ring sets three diamonds in a row, a centre stone with a slightly smaller stone on each shoulder. The three stones are often read as past, present and future, which is part of why the style lasts. At Luma we build trilogy rings around lab grown diamonds, each one IGI certified and set in solid gold or platinum, and we make them to order in our Hatton Garden workshop. Our trilogy rings start at 775 pounds. You choose the centre shape, the side stones, the metal and the band, and we keep the price down by working direct rather than through a retail markup. Every ring is UK hallmarked. See the full range on our trilogy engagement rings collection, or book a consultation and we will talk you through the options.
Why trilogy and lab grown work together
Trilogy rings put more weight into multiple stones rather than one large centre. With lab grown diamonds, the cost saving across three stones is significant. A comparable trilogy in mined diamonds typically starts above 7,000 pounds, so choosing lab grown stones lets you put the saving into carat weight or metal instead. The three stones can be matched in size for a balanced look, or graduated with a slightly larger centre for a classic engagement ring profile.
When a trilogy suits the wearer
Trilogy rings suit wearers who like meaning attached to their jewellery, given the past, present, future symbolism. They also suit anyone who wants a ring that reads as substantial without going to a 2 carat plus centre stone. The horizontal silhouette sits well on longer fingers and works particularly elegantly on hands where a tall single stone would look out of proportion.
When a trilogy does not suit
The horizontal layout makes a trilogy wider than a solitaire of the same total carat weight. Wearers who frequently use their hands for detailed work (medical, lab work, dough handling) may find the wider profile catches more often. Trilogies also benefit from more careful daily prong checking than a solitaire because there are three centre stones rather than one. If she leans minimalist or wears stacking rings on the same finger, a trilogy can crowd the stack.
Stone arrangements within the trilogy family
The two main arrangements are matched and graduated. A matched trilogy uses three diamonds of the same carat weight and shape, which gives a clean horizontal balance and reads as a deliberate trio. A graduated trilogy uses a slightly larger centre stone (typically 1.5 to 2 times the side stones) and reads more like a traditional engagement ring with two accent stones. Both are valid choices and we set them to the same standard.
Centre stone shapes that work best
Round brilliant remains the most popular choice for trilogy because it matches symmetry across the three stones. Oval centres with smaller oval side stones create an elegant elongated trilogy. Emerald cuts in trilogy are a strong choice for buyers who prefer step cut clarity to brilliant cut sparkle. Pear shapes can work as a centre with round side stones, though matching three pears is a specialist choice and best discussed bespoke. Princess cut trilogy rings have a distinctive geometric look but require careful corner setting.
Metal recommendations
14k yellow and white gold are the most common metals for trilogy rings because they balance durability with daily wear. Platinum suits trilogy rings particularly well because the metal supports the side stones securely and the cool white tone lets the diamonds read as bright. 18k yellow gold trilogy rings have a warmer, more traditional feel and pair well with vintage inspired designs. Every piece is hallmarked at the London Assay Office.
Care and maintenance
Trilogy rings should be cleaned every two weeks with warm soapy water and a soft toothbrush, paying particular attention to the side stone prongs which can collect more soap residue than a solitaire. We include a free annual prong check and professional clean for life on every Luma trilogy ring, which is the best way to catch a loose side stone before it becomes a problem.
Pricing at Luma
Our trilogy engagement rings with lab grown diamonds start at 775 pounds. The Aurelia, our entry trilogy, is 1,295 pounds in 14k gold. A 1 carat total weight trilogy in 14k gold is around 1,500 pounds, and a 2 carat total weight with a graduated centre is around 2,000 pounds. Bespoke trilogy designs can be matched to specific carat weights and stone shapes within typically four to eight weeks. Every diamond is IGI graded and shown to you with the certificate before setting.
Common questions about trilogy engagement rings
How much does a trilogy lab grown engagement ring cost in the UK?
At Luma our trilogy lab grown engagement rings start at 775 pounds, with the Aurelia entry design at 1,295 pounds in 14k gold. A 1 carat total weight trilogy in 14k gold is around 1,500 pounds, and a 2 carat total weight is around 2,000 pounds. The final price depends on the diamonds, the carat weights and the metal you choose. We price direct, so there is no retail markup on top.
What does a trilogy ring symbolise?
The three diamonds are usually read as the past, present and future of a relationship. Some couples read them as friendship, love and commitment. There is no fixed rule, which is part of the appeal.
Can I choose the diamond shapes in a trilogy ring?
Yes. You pick the centre shape and the side stones, and we set them in gold or platinum in our Hatton Garden workshop. A common choice is a round or oval centre with matching side stones, but we make the ring to your specification.
Read more: engagement rings collection. To design a bespoke trilogy with us, book a studio consultation at our Hatton Garden workshop.
Shop by shape: oval, halo and trilogy lab grown engagement rings.
