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Sidestone Lab Grown Diamond Engagement Rings

Crafted by our jewellers with care and precision.

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Sidestone Engagement Rings —Timeless, Forever.

Refined, balanced, and beautifully detailed, sidestone engagement rings offer a timeless design that is defined by a central stone flanked by smaller stones along the band. Sidestones add a subtle shimmer and sophistication without taking focus away from the centrepiece, each enhancing the brilliance of the ring while representing the journey you’ve shared. From round and oval to emerald and marquise centre stones, sidestone settings are wonderfully versatile and can be personalised with pavé diamonds, baguettes, or coloured gemstones to reflect your unique story. At Cullen, each sidestone ring is handcrafted by our expert jewellers using lab-grown diamonds, moissanite, or lab-grown sapphires — a responsible, sustainable choice designed to last a lifetime.

Creating your ring with Cullen is a special part of your story. Looking to view our range in person in the UK? Book a consultation to bring your custom sidestone design to life.
 

Find Your Perfect Sidestone Engagement Ring with Cullen

Cullen specialises in custom-made side stone engagement rings to complement your perfect proposal. We combine the knowledge of experienced jewellers with an exceptional client service team that can help guide you through every step of the engagement ring design process, from choosing your sidestones to personalised details like a diamond pavé band.

Need help choosing your dream sidestone engagement ring in the UK? Book a virtual or in-person appointment at our showroom to speak with one of our knowledgeable engagement ring specialists.

Crafted with heart. Made to last.

Worldwide Express Shipping No matter where you are in the world, your dream ring will go the distance. We proudly ship our sidestone engagement rings UK-wide and internationally, ensuring your custom piece arrives safely and swiftly.

Free Resizing We offer free resizing on all of our engagement rings, including sidestone rings, ensuring a perfect fit for something uniquely yours.

Lifetime Warranty Our sidestone engagement rings are built to last a lifetime. Each piece is backed by our lifetime manufacturing warranty, giving you complete peace of mind.

Tailored Ring Customisation From unique sapphire sidestone engagement rings to personalised details like round claws, we offer an extensive customisation service so you can wear a ring that’s truly one-of-a-kind.

Thoughtfully Designed in Melbourne, Australia All of our rings, including our yellow gold sidestone engagement rings, are crafted by our expert jewellers with exceptional attention to detail.

Conflict-Free, Consciously Crafted
Our sidestone engagement rings are crafted with sustainably sourced metals and lab grown gemstones, giving you the confidence that your made-to-order ring is responsibly made with care for the planet and your values.

Carbon Neutral Gemstones & Trees For The Future We offset the carbon footprint of all of our gemstones and plant a tree for each ring sold, supporting global reforestation.

Custom Design Specialists Whether you're dreaming of an elegant rose gold sidestone engagement ring or something uniquely your own, our team specialises in creating custom ring designs for your forever ring.

Looking for a specific style? Choose from our collections below:

A sidestone engagement ring features a center stone accented by smaller stones set along the band. These additional gems add brilliance and balance, enhancing the overall sparkle without overshadowing the main stone.

Sidestone rings offer a beautiful balance of elegance and meaning. The added stones represent shared moments or a journey together, while their subtle shimmer brings extra sophistication to the design.

Absolutely. Our friendly engagement ring specialists can help you personalise your sidestone ring with your choice of gemstone shape, size, arrangement, and accent stones to create a piece that’s truly your own. Find more information about custom designs here. 

We offer sidestone rings set with lab-grown diamonds, moissanite, and sapphires — all carefully selected for their beauty, durability, and responsible sourcing.

Clean your ring gently with mild soap and a soft brush. We recommend regular check-ups to ensure the side stones remain secure and the setting stays in top condition. For more information, find our ring care guide here.

They offer timeless elegance with added sparkle, making them ideal for those who want something refined but with more visual interest than a solitaire. Their versatility also suits a wide range of styles.

Sidestone rings are designed for everyday wear and pair beautifully with wedding bands. They sit comfortably on the finger while catching light from every angle.

Yes, Cullen offers one complimentary resizing within the first 12 months of your ring’s completion, subject to the style and metal type. You’ll find specific sizing details on each product page and more information on our resizing policy here.

Yes, every Cullen engagement ring, including sidestone rings, comes with a lifetime manufacturing warranty for your peace of mind.