An emerald cut three stone engagement ring brings together two of the most striking design choices you can make: the clean, geometric lines of an emerald cut diamond paired with the symbolic weight of a three stone setting. It’s a combination that feels both modern and timeless, and one we get asked about regularly at our Hatton Garden workshop.

At A Star Diamonds, our goldsmiths and gemologists have helped hundreds of couples design rings built around this exact pairing. Whether you’re drawn to the classic look of three matching emerald cuts or want to mix shapes for something with more contrast, the options are wider than most people expect.

In this guide, we’ll walk you through five distinct emerald cut three stone styles available here in the UK, covering different settings, metal choices, and diamond combinations, so you can find the one that fits your story.

1. Bespoke emerald cut three stone ring from A Star Diamonds

If you want an emerald cut three stone engagement ring built entirely around your preferences, a bespoke commission from A Star Diamonds gives you complete control over every element. Rather than choosing from a fixed catalogue, you work directly with our goldsmiths and gemologists in Hatton Garden to design something that genuinely reflects the two of you.

What this style looks like

A bespoke emerald cut three stone ring can take almost any form you choose. The most common starting point is a step-cut emerald cut centre stone flanked by two matching emerald cuts, set in a clean four-claw or rub-over setting. From there, you can adjust proportions, add fine detailing to the band, or combine metals to create something with more visual contrast.

Who it suits

This option works particularly well if you have a clear vision of what you want but cannot find it ready-made, or if you want your ring to include specific stones, an unusual carat ratio, or a detail that carries personal meaning. It also suits buyers who want to set a precise budget and work within it from the very start.

Design choices to get right

The most important decision is the size ratio between your centre and side stones. A centre stone that is too small relative to the sides can look unbalanced; too large and the sides lose their purpose. Our gemologists will guide you through ideal proportions based on your finger size and the specific diamonds you select.

Getting the stone ratio right before setting is far easier than adjusting it afterwards.

Typical UK price range

Bespoke emerald cut three stone rings at A Star Diamonds typically start from around £3,000 to £4,000 for a lab-grown diamond version, with natural diamond options generally starting from £6,000 upwards, depending on carat weight, metal choice, and stone quality.

2. Emerald cut with tapered baguette side stones

The tapered baguette is the most natural pairing for an emerald cut three stone engagement ring. Both cuts share step-cut faceting, so the three stones sit together with a visual unity that few other combinations achieve.

What this style looks like

Tapered baguettes are rectangular step-cut stones that narrow at one end to sit flush against the centre stone’s shoulders. The result is a long, linear silhouette with a distinctly architectural quality that feels both precise and elegant.

Who it suits

This style works well for anyone drawn to clean geometry and sharp angles. It particularly suits buyers who want a vintage or Art Deco-influenced look without softening the ring with curves.

Design choices to get right

The length-to-width ratio of your baguettes must stay proportional to the centre stone. Side stones that are too short make the setting look crowded, while ones that are too narrow disappear entirely.

Ask your jeweller to place at least two different baguette lengths next to your chosen centre stone before you commit.

Typical UK price range

Lab-grown versions typically start from £2,500 to £4,000, while rings set with natural diamonds generally begin from £5,000 upwards, depending on carat weight, clarity, and metal choice.

3. Emerald cut with half-moon side stones

The half-moon side stone offers a softer alternative to the angular baguette, making it a popular pairing for an emerald cut three stone engagement ring where you want contrast without losing elegance.

What this style looks like

Half-moon stones are curved on one side and straight on the other, so they sit flush against the flat shoulders of an emerald cut centre stone. The curved outer edge softens the overall silhouette while the straight inner edge keeps the setting structured and clean.

Who it suits

This style suits buyers who find fully angular rings too sharp but still want the sophistication of a three stone design. It works particularly well on wider or shorter fingers, where the curved outline creates a flattering visual effect.

Design choices to get right

The curvature of the half-moon stones must mirror the length of your centre stone’s girdle precisely, or the stones will gap or overlap at the join. Ask your jeweller to confirm the fit between stones before anything is set.

Have your jeweller check the alignment before setting, as adjusting the curve afterwards adds significant cost.

Typical UK price range

Lab-grown versions start from around £2,800 to £4,500, while natural diamond options generally begin from £5,500 upwards, depending on carat weight and metal choice.

4. Emerald cut with pear side stones

Pairing pear-shaped side stones with an emerald cut centre creates one of the more distinctive three stone combinations available. The contrast between the angular centre and the curved, pointed pear sides gives the ring a dynamic quality that feels contemporary without being loud.

What this style looks like

Pear side stones are set with their pointed ends facing outward, creating a wing-like silhouette that draws the eye along the finger. The curved belly of each pear sits flush against the centre stone’s shoulder, producing a flowing, organic outline that contrasts directly with the emerald cut’s straight edges.

Who it suits

This style suits buyers who want an emerald cut three stone engagement ring that feels distinctive rather than traditional. It works especially well for those who find fully geometric rings too rigid and want a softer character without losing sophistication.

Design choices to get right

The orientation of the pear stones is the key decision here. Points facing outward elongate the hand, while points facing inward create a tighter, more compact look. Your jeweller should show you both positions before anything is set.

Confirm the orientation with your pear stones in place, as reversing the direction afterwards means resetting both stones from scratch.

Typical UK price range

Lab-grown versions start from around £2,800 to £4,500, while natural diamond options generally begin from £5,500 upwards, depending on carat weight and metal choice.

5. Emerald cut with round side stones

Round brilliant side stones are the most versatile pairing for an emerald cut three stone engagement ring. The contrast between the step-cut centre and the brilliant-cut sides creates a lively interplay of light that suits a wide range of tastes and budgets.

What this style looks like

Round side stones sit snugly against the shoulders of the centre stone in a claw or bezel setting, with the circular outline providing a soft counterpoint to the emerald cut’s rectangular shape. The overall look is warm and accessible without losing the ring’s architectural quality.

Who it suits

This style suits buyers who want maximum sparkle from their side stones while keeping the emerald cut’s elegant step-cut as the clear focal point. It works well across most finger shapes and sizes.

Design choices to get right

The diameter of each round stone should be chosen to match the width of your centre stone’s short edge, keeping proportions balanced and deliberate.

Confirm the carat weight of the rounds relative to your centre stone before setting, as undersized side stones can make the centre look unsupported.

Typical UK price range

Lab-grown versions start from around £2,500 to £3,800, while natural diamond options generally begin from £5,000 upwards.

Next steps

Each of the five styles above suits a different taste, and the right choice depends on your finger shape, your budget, and what draws you to the emerald cut in the first place. Whether you want the sharp geometry of tapered baguettes or the softer contrast of round side stones, the best way to decide is to see your preferred diamond combinations placed together in person before anything is set.

At A Star Diamonds, we work with every couple from the first conversation through to the finished ring. If you already have a clear idea, we can start sourcing stones immediately. If you are still exploring your options, our goldsmiths and gemologists in Hatton Garden will walk you through the choices without pressure.

Book a consultation with us at A Star Diamonds to start designing your emerald cut three stone engagement ring and see your options come together.