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Find the perfect engagement ring

Shop Engagement Rings by Style

Browse our latest collection of stunning engagement rings and find inspiration for your own dream ring.

Solitaire

Solitaire rings are simply elegant and classic. Each ring design focuses on enhancing the brilliance of a Cullen gemstone.

All Solitaire Rings

Halo

Traditional round and cushion shaped stones are especially sought after in the halo design because of their romantic vintage-inspired look.

All Halo Rings

Trilogy

Symbolising the past, present and future, three stone engagement rings are a perfectly sentimental choice.

All Trilogy Rings

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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.

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Our Melbourne showroom

WHY CULLEN JEWELLERY

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.

PROUDLY AUSTRALIAN

Our Story

SUSTAINABLE MANUFACTURING

ethical sourcing

LIFETIME WARRANTY

Warranty

Frequently Asked Questions

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: 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. 

A lab-grown diamond is entirely different to a diamond simulant. Simulant diamonds are manufactured to look like a real diamond but are made from totally different materials. The most well-known simulant is cubic zirconia (CZ), a crystal form of zirconium oxide. 

Lab-grown diamonds are made from actual carbon atoms arranged in the characteristic diamond crystal structure - making them 100% real diamonds! Lab-grown diamonds are just diamonds whose origins are the only distinguishable difference. Lab-grown and mined diamonds are formed of pure carbon and hold a hardness rating of 10 on the Mohs hardness scale. A lab-grown diamond is created in a highly controlled environment and will last just as long as a mined diamond with the same optical characteristics.

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 size.

Absolutely not! Since lab-grown diamonds have the exact same physical and chemical properties as mined diamonds and are from the same material, they are just as durable and scratch-resistant — meaning they will never become cloudy. Their fire scintillation and sparkle dispel any notion that a laboratory setting is inferior to its mined counterpart. In being identical to mined diamonds, lab-grown diamond rings with gem certification are an impeccable choice. 

Yes, lab-grown diamonds will absolutely pass a diamond tester. Since lab-grown diamonds are made of pure carbon and have the same thermal conductivity and chemical properties as real diamonds, they will record a positive test on a diamond tester.

Absolutely! All our lab-grown diamonds are evaluated on cut, clarity, colour, and carat weight and are IGI or GIA-certified. Most of our lab diamonds are certified by the leading lab-grown gemological institute, IGI. The IGI is the most popular lab-created diamond certifier and is used by most of the lab market, creating consistency in grading across the lab diamond industry. This allows the consumers to compare lab diamonds easily and to be assured they’re getting what they’re paying for.

Lab-grown diamonds are the eco-friendly alternative to mined diamonds. Did you know that over 250 tons of ore must be moved just to mine 1 carat of a mined diamond? By removing the need for mining, lab-grown diamonds reduce the devastating environmental impact and ensure natural habitats, fauna, and ancestral communities are unharmed in their production.

We believe that every couple deserves a ring that is as unique as their love, and our skilled craftsmen take great pride in creating beautiful lab-grown diamond rings for special occasions that will be cherished for a lifetime. Lab-grown diamonds are 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 lab diamond. Specific trace elements can differ, though they are physically identical. 

Our high-quality, certified lab-grown diamonds are the perfect choice for an engagement ring. They are conflict-free, eco-friendly, and available 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 perfect diamonds. 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 a ring that is truly special with a gem certification identifying them as legitimate.

Moissanite is worth buying for its lasting beauty, cost-effectiveness, and conflict-free origins. As a lab-created stone, moissanite involves no mining, and its origins can be easily traced, making this a sustainable choice of gemstone. In addition, moissanite is significantly lower in price than diamonds of the same size and quality, allowing you to purchase your dream ring for a fraction of the price! 

With a high clarity grade and a hardness rating of 9.25-9.5 (second only to a diamond at 10), your moissanite stone is extremely durable and will retain its sparkle throughout everyday wear. At Cullen Jewellery, we are so sure of this that we provide a lifetime warranty to guarantee our moissanite engagement rings' lasting brilliance, colour, and clarity. Read more

Yes, moissanite will pass a diamond tester. Moissanite and diamonds conduct heat in very similar ways, and since diamond testers measure thermal conductivity, moissanite passes as a diamond. A specific Moissanite tester that uses electrical conductivity can be used to distinguish the difference between a moissanite and a diamond. However, the easiest way to differentiate between a diamond and moissanite is to use a loupe to look through the top of the jewel at an angle. Moissanite stones will show two slightly blurred lines, indicating double refraction – this is moissanite’s unique attribute. Read more

No, moissanite does not lose its sparkle. Due to its superior hardness, clarity and refractive index, moissanite will remain bright and sparkly forever. Over time, oils and dirt can build up on the surface of your stone, but this can be easily cleaned away either by a professional or at home. At Cullen Jewellery, we guarantee your moissanite’s lasting brilliance, clarity and colour with a lifetime warranty – so you never have to worry about your moissanite losing its shine! Read More

Of course. We only source our moissanite from Radiant Beauty. Radiant Beauty is a respected Australian company that ensures their high-quality moissanite has been expertly graded and can be thoroughly traced back to the manufacturer. Read More

Due to low levels of regulation in the moissanite industry, it is easy for low-quality, unbranded stones to flood the market. Though often sold at cheaper prices, these stones come from unknown sources and are vastly inferior in colour and cut. To guarantee your moissanite stone’s beauty, quality and authenticity forever, you should only consider purchasing branded moissanite from reputable companies. At Cullen Jewellery, we source all of our stones for our moissanite rings from Radiant Beauty, an Australian company that ensures their moissanite is professionally manufactured, carefully selected, and graded by experts.

No, you can't scratch moissanite. As it is one of the most durable substances on earth, a moissanite stone is highly resistant to scratching or breaking. With a hardness rating of 9.25 – 9.5, moissanite is harder than all other gemstones besides diamonds and can only be scratched by a diamond or another moissanite stone – which is unlikely to occur! Read More

Have you been dreaming of the perfect engagement ring but aren’t sure where to start? Look no further than a unique Cullen moissanite ring. We have a wide selection of moissanite rings with many characteristics, so you can find your dream ring to match your style. The durability of moissanite means you can create the perfect ring that will have the sparkle, fire, and brilliance that lasts forever. Our expert jewellers combine our stunning gems in any shape with beautiful ring settings to capture your vision impeccably. Our free ring sizer lets you know your ring size before scheduling a virtual appointment or visiting our showroom. As a world-leading brand, you can rest assured that you don't have to wait any longer for the modern engagement ring you've been looking for.

The unrivalled brilliance of our entire process means that the customer is always centred. We sell a variety of moissanite gems, including oval cut, round brilliant, and other classic shapes and new styles in settings such as pavé and solitaire. Shopping with Cullen Jewellery for yourself or your partner means you can be assured that you will get the dream ring in style, guaranteed. So, schedule your appointment today!