Custom Made Lab Grown Diamond Engagement Rings

Your journey starts here

View our range of lab grown diamond engagement rings

Lab Grown Diamond Engagement Ring Styles

Symbolising eternity, express your love with a lab-grown diamond for unparalleled sparkle and clarity.


Expertly cut to sparkle and shine, a solitaire lab-grown diamond engagement ring is a timeless classic.

All Solitaire Rings


A halo engagement ring features a majestic centre stone encircled by an enchanting shimmer of lab-grown diamonds.

All Halo Rings


Three lab-grown diamonds shine and dazzle in a trilogy engagement ring, exuding sophistication without a trace of mining.

All Trilogy Rings

Superior Beauty and Value

Lab-grown diamonds are produced by recreating the exact conditions under which mined diamonds are formed. Everything from the look, feel, and chemical makeup to the sparkle and light refraction are identical to a mined diamond. Lab-grown diamonds surpass a mined diamond's quality because they are grown in a controlled environment, offering superior clarity and brilliance that will dazzle for years to come.

Celebrate your love with the beauty of a lab-grown diamond today. Other exciting benefits include being affordable, traceable, conflict-free, and having a significantly lower environmental impact due to their sustainable origins. With all these advantages, lab-grown diamonds make an exquisite choice for any diamond engagement ring. Why settle for anything less than the best?

Get Inspired by Our Latest Collection

At Cullen Jewellery, we specialise in creating bespoke lab-grown diamond engagement rings and wedding bands. A custom lab-grown diamond engagement ring lets you control every detail of your design and production. We take time and care to ensure your vision is brought to life exactly as you imagined.

With a vast range of expertly-crafted lab-grown diamond fine jewellery on our website ready to browse, Cullen Jewellery caters for those who want to create their own design or simply pick out an existing one.

Other Lab Grown Diamond Jewellery

Women's Wedding Bands

Men's Wedding Bands

Fashion Rings


Necklace Pendants



Available Anywhere

Cullen Jewellery is a global brand based in Melbourne and expanding to other cities around Australia. Book an appointment to come in and see us at our Melbourne showroom today.

Our simple crafting process incorporates free shipping worldwide on all orders with full insurance. We offer online video appointments if you want to chat about your engagement ring journey. There is no obligation, and we love hearing your love stories; our knowledgeable team are passionate about helping you choose the perfect engagement ring.

Schedule a Visit to Our Showroom

Conveniently located in the heart of Kew in Melbourne, our showroom features a range of our most popular engagement rings, including Solitaire, Halo, and Trilogy styles in Yellow Gold, White Gold, Rose Gold, and Platinum.

What are you waiting for?

Make an appointment with us in person or virtually to talk about your dream ring today. There’s no obligation and we love hearing your love stories; our knowledgeable team are passionate about helping you along the journey of choosing the perfect engagement ring.


Cullen Jewellery celebrates life's cherished moments, conscientiously. Cullen Jewellery is the leading ethical and accessible brand for premium lab-grown engagement rings. Headquartered in Melbourne, Australia, Cullen Jewellery specialises in timeless and bespoke lab-grown diamond and moissanite engagement rings.

We are committed to providing ethical and eco-friendly fine jewellery that will last a lifetime. We operate responsibly and sustainably through our positive community impact and exclusive use of lab-grown gemstones. The elegant creations designed by Cullen Jewellery are synonymous with exceptional craftsmanship, empowering couples to embody their values for generations to come.


Our Story


ethical sourcing





Yes! Lab-grown diamonds are just as real as mined diamonds.

With the exact same optical, chemical, thermal and physical properties, the only difference between lab-grown diamonds and mined diamonds is their origin. Lab-grown diamonds are grown in controlled laboratory environments with advanced technology that produce the same extreme pressure and heat conditions that form mined diamonds in the earth's crust.

There are two popular methods that differ in the growth phase for lab-created diamonds: a special deposition process called chemical vapour deposition (CVD) and high pressure, high temperature (HPHT). They both involved highly specialised equipment in highly controlled environments.

Lab-grown diamonds are an excellent alternative to mined diamonds as they provide much more value. Without sacrificing quality for price, lab-grown diamonds are more affordable than mined diamonds of the same quality and carat size.

Every couple deserves a ring that is as unique as their love and a match for their style, and our skilled artisans take great pride in creating beautiful lab-grown diamond rings for special occasions that will be cherished for a lifetime. Our vast range of ring settings and beautiful lab-grown diamonds means you will be able to find the perfect ring. You can wear a lab-grown stone in any shape — such as emerald, pear, oval, or princess — with pride.

Lab-grown diamonds are chemically identical to mined diamonds, with the same fire scintillation and sparkle. With highly specialised equipment and cutting-edge technology, the necessary conditions (such as extreme pressure) are replicated in a lab to produce a diamond indistinguishable from a mined diamond to the naked eye. Specific trace elements can differ, though they are physically identical, and as the sustainable option, they are aesthetically identical with the same optical characteristics.  

Our high-quality, certified lab-grown diamonds in any ring setting are perfect for an engagement ring. We only offer conflict-free, eco-friendly diamonds in a wide range of shapes and settings. And because they are grown in a laboratory with cutting-edge technology in a sustainable process, they are perfectly uniform in quality and clarity — the closest thing to a perfect diamond. Indeed, they have the same fire and optical properties as a mined diamond formed in the earth’s mantle. 

When you purchase a Cullen Jewellery diamond engagement ring or wedding band, you can be confident that you are getting an exceptional ring with an official gem certification identifying its gemstones as legitimate. We also offer quick shipping and a custom ring service, so you can design your own engagement ring, and we'll do the rest.