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A trilogy engagement ring features three diamonds set in balance to create a strong, structured design. At Harmony Jewels, our trilogy engagement ring collection focuses on proportion, secure settings, and consistent diamond quality to deliver refined three stone designs suitable for everyday wear.
Our diamond trilogy engagement rings are designed with three carefully matched stones that create visual depth without overpowering the band. Often referred to as a trilogy ring or three stone engagement ring, this style offers a distinctive alternative to single-stone settings while maintaining a clean and wearable profile. Each trilogy diamond ring is crafted with precision-set diamonds and durable metals, making it suitable as a three stone wedding ring or a dedicated engagement piece. Harmony Jewels ensures each ring meets high standards of craftsmanship, fit, and long-term performance.
Whether you visit us in Hatton Garden or connect with us from home, our jewellery experts are with you every step of the way, making the process as enjoyable as the moment you say yes.
Book Your Free ConsultationThe trilogy ring is one of the most versatile engagement ring styles and one of the most personal. Three stones, countless ways to arrange them.
Side stones that taper toward the band such as pear diamonds or tapered baguettes, create a seamless flow into the center stone and suit those who prefer a sleek, uninterrupted silhouette.
On proportion: the traditional approach sets each side stone at around half the carat weight of the center diamond, giving the ring a natural graduation. But there's no rule that holds: closer in size can feel equally considered, and our consultants will help you find what works for your center stone and overall design.
At Harmony Jewels, no two trilogy engagement rings are the same, because no two clients are. The design process starts with you: your taste, your vision, and the details that matter most. From there, our gemmologists prepare a hand-selected range of center stones to present at your appointment, narrowing down the options so that every diamond you see is genuinely worth considering.
With your center stone chosen, we turn our attention to the band itself. The shoulder diamonds need to work in harmony with one another and with the center stone, matched as closely as possible in cut, colour, clarity, and size. Finding that match takes a trained eye, and it's something our team handles with care on every commission.
The finished ring is made entirely in our Hatton Garden workshop, by goldsmiths who are as invested in the details as you are. Book an appointment to start the process.
A trilogy engagement ring, also known as a three stone engagement ring, features a centre diamond flanked by two side stones. The three stones are said to represent the past, present, and future of a relationship, making it one of the most meaningful engagement ring styles in fine jewellery. For a deeper look at the style, read our guide to trilogy engagement rings.
A solitaire features a single centre stone on a plain or diamond band. A trilogy ring adds two side stones, framing the centre diamond and adding width, volume, and additional sparkle to the overall design.
Round brilliant diamonds are the most popular choice for their symmetry and light return. Pear diamonds and tapered baguettes work beautifully as side stones, sitting flush against the band and complementing a variety of centre stone shapes. Emerald, oval, and cushion cuts are also popular choices for both centre and side stones. If you're still exploring which shape is right for you, our friendly guide to diamond shapes is a good place to start.
The traditional guideline is for each side stone to sit at around half the carat weight of the centre diamond, creating a natural graduation. However, this is entirely a matter of personal preference: closer in size creates a bolder, more uniform look, while a larger difference in size draws more focus to the centre stone.
Yes. For the ring to look its best, the two side stones should be as closely matched as possible in cut, colour, clarity, and carat weight. At Harmony Jewels, our gemmologists source and match side stones carefully so the finished ring has a coherent, balanced appearance.
Yes. Mixing shapes, for example, a round brilliant centre with pear-shaped side stones, or an emerald cut center with baguette sides, is a popular and elegant approach. Our consultants can advise on which combinations work best together.
Absolutely. Sapphires, rubies, and emeralds are all popular choices for trilogy side stones, offering a contrast of colour alongside a diamond centre stone. We source gemstones to the same quality standards as our diamonds.
We craft trilogy rings in platinum and white gold, yellow gold and rose gold Each metal has distinct practical and aesthetic qualities, and our consultants will help you choose based on your lifestyle and personal style.
Yes, when properly made. At Harmony Jewels, our in-house goldsmiths use secure, durable setting techniques and we recommend periodic check-ups to ensure all stones remain perfectly set over time.
It begins with an appointment at our Hatton Garden studio. Our gemmologists prepare a curated selection of centre stones based on your preferences, and once your centre diamond is chosen, we move on to sourcing the side stones. Every detail; metal type, setting style, band profile, is decided together, and the ring is made entirely in our workshop. Book an appointment to get started.
Most bespoke trilogy rings are completed within four to six weeks from the point of finalising the design. We'll confirm your timeline at your consultation.
In most cases, yes. However, rings with diamonds set all the way around the band can be more complex to resize. We'll advise you on this during the design process and ensure your ring is made to the correct size from the outset.
Yes, and it's worth thinking about both rings together from the start. We recommend designing your wedding band alongside your engagement ring so that the two sit flush without any gaps. For styling inspiration, take a look at our guide to how to pair your trilogy engagement ring.
A trilogy ring is one of the most enduringly popular engagement ring styles for good reason: it combines meaningful symbolism with genuine design flexibility. Whether you prefer a classic, understated look or something more bold and geometric, the three-stone format accommodates a wide range of tastes and budgets.
At our Hatton Garden studio in London. Book an appointment to view our collection, explore bespoke options, and work with our design consultants to create a ring that's entirely your own.
