The 7 Most Stunning Trilogy Engagement Ring Styles to Fall in Love With This Year

What Is a Trilogy Engagement Ring?

A trilogy ring (also called a three-stone engagement ring) features one central diamond or gemstone flanked by two side stones. The three stones traditionally represent the past, present, and future of a relationship; though many couples today simply love the look, the balance, and the extra sparkle that a trilogy setting brings.

The style gained renewed popularity after Prince William proposed to Kate Middleton with an iconic sapphire surrounded by diamonds, but today's trilogy rings span a much wider range of cuts, metals, and personalities.

1. The Emerald Cut Trilogy — Bezel Set in Yellow Gold

Architectural. Sleek. Unapologetically bold.

Few things in fine jewellery are as commanding as a large emerald-cut diamond flanked by two baguette side stones, all secured in a full bezel setting. The bezel wraps each stone in a continuous band of gold, creating clean geometric lines that feel distinctly modern, almost Art Deco, without trying too hard.

The yellow gold setting adds warmth to the icy brilliance of the diamonds, creating a contrast that feels both vintage-inspired and completely current. If you're drawn to structured, minimalist design with serious presence, this is the trilogy ring for you.

Best for: Those who love architectural jewellery, clean lines, and a statement piece that turns heads without excessive ornamentation.

2. The Oval Trilogy — Three Matching Ovals in Platinum

The crowd favourite. Romantic and radiant.

The oval-cut diamond has dominated engagement ring trends for several years, and when translated into a trilogy setting, it takes on a new level of romance. Three oval-cut diamonds of graduating size sit in a classic claw setting on a slim platinum band, creating a soft, elongated cluster that flatters the finger beautifully.

Oval diamonds are known for their exceptional brilliance and their ability to appear larger than their carat weight; both qualities that only multiply when you set three of them together. The result is a ring that looks effortlessly luxurious, full of light, and thoroughly timeless.

Best for: Anyone who loves maximum sparkle, a flattering silhouette, and a style that will never date.

3. The Marquise Trilogy — Asymmetric and Contemporary

For the rule-breaker. Sculptural and unexpected.

This is the trilogy ring for those who want something that doesn't look like anyone else's. A marquise-cut centre diamond is flanked by two pear-cut side stones set at complementary angles, creating an asymmetric, petal-like cluster that sits close to the finger and moves beautifully.

Set in yellow gold with delicate claw prongs against a dark background that makes every facet ignite, the overall effect is organic and sculptural; more like wearable art than a conventional engagement ring. It's a trilogy that challenges what the style can be, and answers the challenge beautifully.

Best for: Creative, free-spirited personalities who want a ring that reflects an individual aesthetic and sparks conversation.

4. The Radiant Cut Trilogy — Half Moon Sides in Yellow Gold

Modern proportion. Warm and brilliant.

The radiant cut is the perfect meeting point between the emerald cut's geometric elegance and the round brilliant's extraordinary sparkle. Here, a substantial radiant-cut centre diamond is flanked by two half-moon side stones — a pairing that feels considered and deliberate, each element chosen to complement rather than compete.

Set on a deliberately slender yellow gold band, the stones take centre stage entirely. The warmth of the gold against the brilliance of the diamonds creates a richness that platinum simply cannot replicate and the half-moon sides echo the radiant's corners in a way that makes the whole composition feel designed rather than assembled.

Best for: Those who want serious brilliance with a warm, contemporary feel and a setting that works beautifully on its own or alongside a wedding band.

5. The Pink Diamond Trilogy — Radiant Cut with Trapezoid Sides in Platinum

Rare by nature. Extraordinary by design.

There are trilogy rings that turn heads, and then there is this. A fancy light pink radiant-cut diamond, flanked by two trapezoid-cut white diamond side stones, all set in platinum. It sounds simple. On the finger, it is anything but.

The radiant cut was chosen deliberately; its brilliant-cut facet pattern maximises light return and intensifies colour, coaxing every drop of blush and rose from a stone that, in a lesser setting, might whisper when it should sing. The trapezoid side stones are flat-faceted and geometric, providing a cool white frame that makes the pink centre appear even more saturated by contrast. Platinum completes the effect — its cool tone doing what no yellow gold could: making that pink feel truly, unmistakably pink.

Natural pink diamonds are among the rarest gemstones on earth. To design a trilogy ring around one is a statement of extraordinary taste and quiet confidence. This is not a ring that announces itself. It simply glows and lets everyone else figure out why they can't stop looking at it.

Best for: The collector. The connoisseur. Someone who understands rarity instinctively and wants a ring that is genuinely, measurably one of a kind.

6. The Asscher Cut Trilogy — Tapered Baguettes in Platinum

Vintage soul. Old Hollywood glamour.

The Asscher cut is one of the most romantic diamond shapes in existence: its stepped facets and square form with deeply cropped corners create a depth that pulls you in, a "hall of mirrors" brilliance that is unlike anything a brilliant cut can produce. In a trilogy setting, flanked by tapered baguette side stones in platinum, it becomes something genuinely extraordinary.

This is a ring with clear references to the 1920s and 1930s, to Art Deco jewellery and the golden age of Hollywood. But it never feels costumey or retro; it feels eternal. Worn alongside a fitted pavé shadow band and a scattered oval diamond eternity ring on the index finger, it shows exactly how a trilogy can anchor a multi-ring look with absolute authority and zero effort.

Best for: Those who love vintage jewellery, Old Hollywood glamour, and a ring with genuine heritage and character that will look as relevant in fifty years as it does today.

7. The Pear Trilogy — Three Pear-Cut Diamonds in Yellow Gold

The most romantic trilogy of all.

Three pear-cut diamonds, one larger, two smaller, gathered together in a delicate claw setting on a fine yellow gold band. The result is a ring that manages to feel both dainty and substantial, soft and brilliant, timeless and utterly of-the-moment.

The pear cut (also called a teardrop) has a long and romantic history in jewellery, and its pointed tip creates a natural visual extension that makes the finger look longer and more elegant. In a trilogy configuration, three pear cuts nestle together like petals, creating a shape that is unlike anything else: organic, graceful, and deeply personal.

This is the trilogy ring that people photograph obsessively. The one that stops people mid-sentence to ask: where did you get that?

Best for: Romantics who want something soft, feminine, and completely unforgettable.

How to Choose Your Trilogy Ring Style

With so many directions to take a trilogy ring, here are a few questions worth sitting with before your design consultation:

What shape speaks to you? Do you lean towards geometric and structured (emerald cut, Asscher, radiant) or soft and romantic (pear, oval, marquise)?

What metal suits your skin tone and lifestyle? Yellow gold is warm and flattering across a wide range of skin tones. Platinum and white gold offer a cooler, brighter look that lets diamond brilliance take centre stage and is the only choice for coloured stones like pink diamonds, where metal tone affects how colour is perceived.

How do you feel about bold versus delicate? A full bezel setting reads as bold and architectural. A fine claw or minimal setting lets the stones feel more exposed and brilliant.

Will you wear a wedding band alongside it? Some trilogy silhouettes, particularly asymmetric or cluster styles, pair better with a simple band, while others are designed to sit flush with a fitted shadow band from the start.

Are you drawn to white diamonds or something rarer? A trilogy setting is one of the most beautiful ways to showcase a coloured gemstone or fancy coloured diamond; the flanking stones can be chosen to complement, contrast, or echo the centre stone in endlessly personal ways.

Design Your Bespoke Trilogy Ring

Every trilogy ring we create is designed from scratch, around your chosen diamond, your preferred metal, and your personal style. Whether you arrive with a clear vision or just a feeling you haven't been able to put into words yet, our design process is built to help you find it.

Virtual consultations are available worldwide. Get in touch to book yours.