Create a Ring That's Truly Yours
From first sketch to final polish, our team guides you through every step.
Initiatives
We acknowledge that producing a finished diamond, whether mined or lab, requires significant energy resources. That's why we offset the carbon footprint associated with all of our lab-grown diamonds.
We plant 1 tree for every jewellery purchase through our partnership with Trees For The Future, focusing on reforestation in areas affected by mining.
Our in-house Precious Metal Recycling Initiative collects and reuses gold and platinum from the crafting process, allowing us to reuse them in resizes and repairs.
Yes — lab-grown diamonds are chemically identical to mined diamonds. They offer the same level of beauty and are an extremely popular choice. Unlike a simulant, a lab-grown diamond has the same chemical and physical properties as a mined diamond. They are aesthetically and physically identical to mined diamonds, offering the same fire and brilliance.
Our range of lab-grown diamonds are available in round, oval, pear, emerald, radiant, cushion, marquise, elongated hexagon, princess, asscher, heart, and elongated cushion. We also offer fancy coloured lab-grown diamonds in all shapes and sizes.
The only difference between a mined diamond and a lab-grown diamond is their origin. Lab-grown diamonds are free from the ethical concerns associated with mined diamonds. They are created under high pressure in a laboratory using advanced technology and offer the same fire, clarity, and carat weight as mined diamonds.
A carbon-neutral lab-grown diamond is a diamond created with net-zero carbon emissions — meaning any carbon produced during its growth and manufacturing process is offset through verified sustainability initiatives. Learn more about carbon neutral lab-grown diamonds.
Yes — moissanite is a brilliant alternative to a lab diamond engagement ring. It offers exceptional clarity, durability, and sparkle, making it a stunning gemstone in its own right. Unlike a "fake diamond," moissanite is a high-quality lab-grown gemstone that provides the same level of brilliance at a more accessible price. Each moissanite stone at Cullen is checked by our expert team to ensure the best quality.
Moissanite engagement rings are increasingly popular due to their beauty, durability, ease of customisation, and affordability. They retain their sparkle indefinitely, with clarity and carat weight remaining intact over time. Many people mistakenly believe moissanite is a "fake diamond," but it is a unique gemstone with its own beauty and brilliance — and to the naked eye, moissanite rings look nearly identical to diamond rings.
Crafting of your ring typically takes 3–5 business days, with expediting options available if you need it sooner. The exact completion date can be found on each product page. Please note that shipping is not included within this date — visit our shipping page for full shipping information, or our crafting timeframes page for all timeframe details.
Yes! We offer free express insured international shipping on orders over $500. We also cover duties and taxes for most countries. Please ensure your shipping details are correct at checkout, as they cannot be changed once your order is confirmed. Visit our shipping page for full details.
We offer a personalised in-person showroom experience to explore gemstone shapes, carat weight, compare engagement ring designs, and purchase our ready-to-wear range. Our collection is also available to shop online, with the option to customise a ring unique to you. A specialist will guide you through each step of your engagement ring journey.
Cullen Jewellery offers a Lifetime Manufacturing Warranty on all rings — including engagement, wedding, and fashion rings — giving you confidence and peace of mind with every purchase. For all other fine jewellery pieces such as earrings, chains, pendants, and bracelets, we provide a 2-Year Manufacturer Warranty. View our full warranty details here.