LOUELLA - Oval Emerald Oval Petite Trilogy Engagement Ring 18k Yellow Gold
Three stones form the composition. Compare their individual shapes, proportions and the complete setting span.
View this designTrilogy 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.
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LOUELLA
Oval Emerald Oval Petite Trilogy Engagement Ring 18k Yellow Gold
From €2.478,95 EUR
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LOUELLA
Oval Alexandrite Oval Petite Trilogy Engagement Ring 18k Yellow Gold
From €2.478,95 EUR
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LOUELLA
Oval Blue Sapphire Oval Petite Trilogy Engagement Ring 18k Rose Gold
From €2.478,95 EUR
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LOUELLA
Oval Blue Sapphire Oval Petite Trilogy Engagement Ring 950 Platinum
From €2.478,95 EUR
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LOUELLA
Oval Pink Sapphire Oval Petite Trilogy Engagement Ring 18k Rose Gold
From €2.478,95 EUR
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LOUELLA
Oval Pink Sapphire Oval Petite Trilogy Engagement Ring 950 Platinum
From €2.478,95 EUR
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Choosing trilogy lab grown gemstone engagement rings
Trilogy gemstone engagement rings use three principal stones to create a balanced composition across the finger. A coloured centre gemstone is typically flanked by two side stones, adding width, brilliance and visual structure without enclosing the centre in a halo. The arrangement can feel classic, symbolic or distinctly contemporary depending on the shapes chosen.
How side stones change the centre gemstone
Round or pear shaped diamond side stones can soften an angular emerald or radiant cut centre, while matching shapes create a more symmetrical look. Tapered side stones lead the eye inward and emphasise the centre colour. The relative scale matters: smaller side stones keep the gemstone dominant, whereas larger stones create a broader three-stone statement.
Colour combinations and precious metals
Colourless diamonds are a natural partner for lab grown emerald, blue sapphire and ruby centre stones because they frame the colour without introducing a competing hue. Platinum and white gold make the contrast crisp; yellow gold adds warmth and can give the ring a more traditional feel.
Finding the right three-stone proportions
Look beyond total carat weight and compare the width of the complete three-stone arrangement. The centre stone dimensions, side-stone size and angle of the shoulders determine how the ring sits across the finger. Also check the gallery height if you want a wedding band to sit closely alongside the engagement ring.
Refine your trilogy shortlist
Check the dimensions and material of each stone, including the side stones. Their scale, outline and position can change the composition even when the centre weight is unchanged. Look at the setting’s full width and how the outer stones sit above the band.
Designs to compare
LOUELLA - Oval Yellow Sapphire Oval Petite Trilogy Engagement Ring 18k Yellow Gold
Three stones form the composition. Compare their individual shapes, proportions and the complete setting span.
View this design2026 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.
We are passionate about supporting good causes that make the world a better place
Giving Back
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At Lily Arkwright, Community Matters Lily Arkwright’s roots lie in leafy Didsbury, Manchester. While we have grown into one of the UK’s leading fi...
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This year marks Lily Arkwright's 5th year of supporting Unicef during Black Friday building upon our successful 2019 Unicef Halloween Ball partne...
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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.