Trilogy Lab Grown Gemstone Engagement Rings

Trilogy coloured gemstone engagement rings combine three principal stones in a balanced composition, often pairing a vibrant centre with lighter side stones. Discover lab-grown sapphires, emeralds and other colourful gemstones in platinum and gold. The relationship between the stone shapes and sizes gives each design a different silhouette, from gently tapered arrangements to more substantial three-stone settings.

Louella trilogy engagement ring in 18k yellow gold with an oval lab-grown emerald centre stone, front view.

LOUELLA
Oval Emerald Oval Petite Trilogy Engagement Ring 18k Yellow Gold

From HK$21,794.00 HKD

Louella trilogy engagement ring with an oval morganite-pink lab-grown sapphire centre stone, front view.

LOUELLA
Oval Morganite Pink Sapphire Oval Petite Trilogy Engagement Ring 950 Platinum

From HK$21,794.00 HKD

Louella trilogy engagement ring in 18k yellow gold with an oval yellow lab-grown sapphire centre stone, front view.

LOUELLA
Oval Yellow Sapphire Oval Petite Trilogy Engagement Ring 18k Yellow Gold

From HK$21,794.00 HKD

Louella trilogy engagement ring in 18k yellow gold with an oval lab-grown alexandrite centre stone, front view.

LOUELLA
Oval Alexandrite Oval Petite Trilogy Engagement Ring 18k Yellow Gold

From HK$21,794.00 HKD

Louella trilogy engagement ring with an oval blue lab-grown sapphire centre stone, front view.

LOUELLA
Oval Blue Sapphire Oval Petite Trilogy Engagement Ring 18k White Gold

From HK$21,794.00 HKD

Louella trilogy engagement ring in 18k rose gold with an oval blue lab-grown sapphire centre stone, front view.

LOUELLA
Oval Blue Sapphire Oval Petite Trilogy Engagement Ring 18k Rose Gold

From HK$21,794.00 HKD

Louella trilogy engagement ring in 18k yellow gold with an oval blue lab-grown sapphire centre stone, front view.

LOUELLA
Oval Blue Sapphire Oval Petite Trilogy Engagement Ring 18k Yellow Gold

From HK$21,794.00 HKD

LOUELLA
Oval Blue Sapphire Oval Petite Trilogy Engagement Ring 950 Platinum

From HK$21,794.00 HKD

LOUELLA
Oval Morganite Pink Sapphire Oval Petite Trilogy Engagement Ring 18k White Gold

From HK$21,794.00 HKD

Louella trilogy engagement ring in 18k rose gold with an oval morganite-pink lab-grown sapphire centre stone, front view.

LOUELLA
Oval Morganite Pink Sapphire Oval Petite Trilogy Engagement Ring 18k Rose Gold

From HK$21,794.00 HKD

Louella trilogy engagement ring in 18k yellow gold with an oval morganite-pink lab-grown sapphire centre stone, front view.

LOUELLA
Oval Morganite Pink Sapphire Oval Petite Trilogy Engagement Ring 18k Yellow Gold

From HK$21,794.00 HKD

Louella trilogy engagement ring with an oval pink lab-grown sapphire centre stone, front view.

LOUELLA
Oval Pink Sapphire Oval Petite Trilogy Engagement Ring 18k White Gold

From HK$21,794.00 HKD

Louella trilogy engagement ring in 18k rose gold with an oval pink lab-grown sapphire centre stone, front view.

LOUELLA
Oval Pink Sapphire Oval Petite Trilogy Engagement Ring 18k Rose Gold

From HK$21,794.00 HKD

Louella trilogy engagement ring in 18k yellow gold with an oval pink lab-grown sapphire centre stone, front view.

LOUELLA
Oval Pink Sapphire Oval Petite Trilogy Engagement Ring 18k Yellow Gold

From HK$21,794.00 HKD

LOUELLA
Oval Pink Sapphire Oval Petite Trilogy Engagement Ring 950 Platinum

From HK$21,794.00 HKD

Louella trilogy engagement ring with an oval yellow lab-grown sapphire centre stone, front view.

LOUELLA
Oval Yellow Sapphire Oval Petite Trilogy Engagement Ring 18k White Gold

From HK$21,794.00 HKD

Louella trilogy engagement ring in 18k rose gold with an oval yellow lab-grown sapphire centre stone, front view.

LOUELLA
Oval Yellow Sapphire Oval Petite Trilogy Engagement Ring 18k Rose Gold

From HK$21,794.00 HKD

LOUELLA
Oval Yellow Sapphire Oval Petite Trilogy Engagement Ring 950 Platinum

From HK$21,794.00 HKD

Louella trilogy engagement ring with an oval lab-grown emerald centre stone, front view.

LOUELLA
Oval Emerald Oval Petite Trilogy Engagement Ring 18k White Gold

From HK$21,794.00 HKD

Louella trilogy engagement ring in 18k rose gold with an oval lab-grown emerald centre stone, front view.

LOUELLA
Oval Emerald Oval Petite Trilogy Engagement Ring 18k Rose Gold

From HK$21,794.00 HKD

LOUELLA
Oval Emerald Oval Petite Trilogy Engagement Ring 950 Platinum

From HK$21,794.00 HKD

Louella trilogy engagement ring with an oval lab-grown ruby centre stone, front view.

LOUELLA
Oval Ruby Oval Petite Trilogy Engagement Ring 18k White Gold

From HK$21,794.00 HKD

Louella trilogy engagement ring in 18k rose gold with an oval lab-grown ruby centre stone, front view.

LOUELLA
Oval Ruby Oval Petite Trilogy Engagement Ring 18k Rose Gold

From HK$21,794.00 HKD

Louella trilogy engagement ring in 18k yellow gold with an oval lab-grown ruby centre stone, front view.

LOUELLA
Oval Ruby Oval Petite Trilogy Engagement Ring 18k Yellow Gold

From HK$21,794.00 HKD

Choosing a Trilogy Gemstone Engagement Ring

A trilogy gemstone engagement ring brings three principal stones together, usually with a coloured centre and complementary stones to either side. The design gives the coloured gemstone prominence while creating a balanced width across the finger.

Consider the relationship between the stones

Smaller round or pear-shaped side stones can soften the outline of a rectangular sapphire; tapered baguettes create a more geometric effect. Look at the colour contrast between the centre and the sides, and compare how much space the arrangement covers on the hand. The setting should support each stone appropriately, including exposed corners or tips.

Think about the side-stone combination

A coloured centre looks quite different with two white diamonds beside it than with a trio of similarly toned gemstones. Check the way the side stones taper towards the band, and whether the overall design sits comfortably across the finger. The height and spacing of each basket affect both the view from above and the fit of a wedding ring. Choose the combination that lets the main colour remain expressive without feeling isolated.

Check the height of all three mountings and whether a straight wedding ring will sit comfortably against the shank. If you would prefer a single centre with no side stones, our solitaire gemstone engagement rings offer a useful comparison. Choose the arrangement you enjoy, whether or not the traditional symbolism is part of its appeal.

2026 Award Nominations

Award Winning Jeweller

We’re proud to be recognised consistently by the UK jewellery industry’s leading awards programmes. In 2026, Lily Arkwright has been shortlisted for Branded Boutique of the Year at the Professional Jeweller Awards and Bridal Jewellery Retailer of the Year at the UK Jewellery Awards, reflecting our continued commitment to exceptional customer service, product innovation, and ethical craftsmanship.

These latest nominations build on previous industry recognition, including being shortlisted for Bridal Jewellery Retailer of the Year at the 2025 UK Jewellery Awards and Independent Retailer of the Year at the Professional Jeweller Awards 2025. We were also finalists for Retail Team of the Year at both the Retail Jeweller Awards and Professional Jeweller Awards in 2024, recognising the passion, expertise, and dedication of our team.

We’re honoured to be recognised for helping thousands of couples find the perfect engagement rings and wedding rings, with a strong focus on choice, transparency, and personalisation. As an award-winning jeweller, we remain committed to delivering exceptional service, exceptional craftsmanship, and responsibly sourced lab-grown diamonds, moissanite, and natural diamonds, ensuring every customer can find a ring that perfectly reflects their love story.

Trilogy Lab Grown Gemstone Engagement Rings FAQs

Is a trilogy setting suitable for coloured gemstone engagement rings?

A gemstone trilogy creates an appealing balance of three principal stones, with colour offering even more scope for individuality. You might love a coloured centre framed by paler accents or three stones in a more coordinated palette. We'd compare the shapes and relative sizes before choosing, as those proportions determine how wide the finished ring looks on the hand. The chosen gemstones should also suit the way the ring will be worn.

What should I compare between trilogy coloured gemstone designs?

We'd look at how the side stones frame the centre and whether their colour, cut and dimensions create the balance you prefer. Pear-shaped sides, for instance, can taper towards an oval centre, while matching rounds give a more symmetrical look. The height and angle of each basket matter as well. With different gemstone minerals in one ring, we'd consider their separate care needs when choosing the design.

Will a trilogy coloured gemstone ring sit neatly beside a wedding band?

The side settings of a trilogy ring may make a flush wedding-band fit more difficult, particularly if the stones sit low or extend beyond the main shank. We'd check the exact profile and compare it with a straight or shaped wedding ring. It's also worth thinking about the combined width on the finger. A lovely pairing should feel comfortable without the bands pressing against vulnerable gemstone settings.

Need help choosing your jewellery?

Our jewellery specialists would be delighted to help you compare designs at our London or Manchester showrooms, or in a virtual consultation.

Book an appointment