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Lab Diamond Engagement Rings

At Larsen Jewellery, we are dedicated to sourcing sustainable, fair, and ethical lab-grown diamonds from trusted suppliers that align with our core values, allowing us to offer you lab-grown diamonds of the highest ethical integrity.

At Larsen Jewellery, we are dedicated to sourcing sustainable, fair, and ethical lab-grown diamonds from trusted suppliers that align with our core values, allowing us to offer you lab-grown diamonds of the highest ethical integrity.

What Are Lab Grown Diamonds?

There are two common ways Lab grown diamonds are created. Both are produced in a controlled laboratory environment. The first method is HPHT which stands for High Pressure, High Temperature. This technique simulates the extreme heat and pressure of the earth’s mantle. The other method is CVD which stands for Chemical Vapour Disposition. CVD diamonds are grown with less pressure and heat with the aid of carbon rich gasses. Both types of laboratory grown diamonds are chemically identical to mined diamonds. This means they share the same physical and optical properties. They exhibit the same fire and sparkle as mined diamonds and are graded using the same 4Cs as the major grading laboratories.

Sustainable Lab Grown Diamonds Larsen Jewellery
Carbon neutral

100% Carbon

Conflict free diamonds

Conflict free

10% of profits to charity

10% of profits
to charity

What Our Customers Say

We've earned a 5-star rating from over 1249 Google reviews across Sydney, Melbourne, and Brisbane.
Definitely recommend Larsen Jewellery. Great staff and advice and exceptional quality.
Lisa Lowcock
Excellent service and very helpful staff. The quality and finish of my item is second to none. I would highly recommend Larsen Jewlery to anyone.
I recently had two rings made by Rod at Larsen Jewellery.He was wonderful and made the process very simple and enjoyable. I am delighted with the end result. They are exactly what I envisaged and I cannot thank Rod enough for his expertise, time and effort.
Di zwirs
I can't say enough amazing things about Larsen Jewellery! When I inherited my grandma's opal ring, I wanted to turn it into a necklace to preserve its sentimental value. After stumbling upon Larsen Jewellery online, I sent an inquiry and got a response within 24 hours. Ben, the gem behind my experience, not only knew what mine my grandfather mined the opal but also sketched out the perfect necklace and offered beautiful suggestions. The whole process was a breeze, and my beautiful necklace was ready in just 5 weeks. Seeing my grandma tear up at its beauty made it all worth it. Huge thanks to everyone at Larsen Jewellery, especially Ben! I'll be shouting your praises to everyone I know!
Alyssa Fitzgerald
Lovely experience working with Rachel, couldn’t recommend more!
Sun Kim
Jacinta was great and really helpful over the phone. Looking forward to our appointment.
Michael Duggan

Meet the talented team at Larsen Jewellery who turn your ideas into stunning pieces.
With decades of hands-on experience, our creative team are leading the way in Australian jewellery craftsmanship.

Ornella - Jeweller


Sydney Jewellery Designer

Ben - Jewellery Designer


Brisbane Jeweller

Jacinta - Jewellery Designer


Melbourne Jewellery Designer

Sydney Jeweller - Kate


Operations Manager

Soukata - Sydney Jewellery Designer


Sydney Jewellery Designer

Alex - Jewellery Designer


Brisbane Jeweller

Tracy - Sydney Jewellery Designer


Sydney Jewellery Designer

Rod - Jewellery Designer


Melbourne Jeweller

Sydney Jewellery Designer - Rachel


Sydney Jewellery Designer

Fleur - Jewellery Designer


Melbourne Jewellery Designer

Melbourne Jewellery Designer Celeste


Melbourne Jewellery Designer

Sarina - Jeweller


Melbourne Jeweller

Sydney Jeweller - Natalie


Sydney Jeweller

Sydney Jeweller - John


Sydney Jeweller

Natalie - Jewellery Designer


Melbourne Jeweller

Bespoke engagement rings

Help Me Choose The Right Engagement Ring

Not sure where to start? Our talented jewellers can walk you through everything you need to know in a 1-on-1 consultation, or you can read our helpful engagement ring guide online.

Frequently Asked Questions

Still have questions? We’re happy to answer them! 

Are lab-grown diamonds the same as real diamonds?

Lab-grown diamonds are identical to mined diamonds sharing the same physical and optical properties. Both are forms of crystallised carbon and exhibit the same fire, scintillation, and sparkle. The biggest difference is that lab diamonds are grown in a much shorter time to form than their natural counterparts.

Do lab grown diamonds come with a certificate?

Yes, our lab-grown diamonds are accompanied by a certificate of authenticity issued by one of the leading diamond grading laboratories including IGI, GIA and GCAL.

Are lab grown diamonds ethical?

At Larsen Jewellery, we proudly align ourselves with growers that are ethically responsible. This ensures that our diamonds comply with the highest ethical standards.

How are lab grown diamonds graded?

As they have the same chemical and physical properties, lab-grown and natural diamonds are graded in the same way. They're assessed on the same 4Cs as the major international grading laboratories (cut, colour, clarity and carat).

Are lab grown diamonds better for the environment?

While lab-grown diamonds may not have the same environmental impact on the earth as mined diamonds, they still require a lot of energy to produce. Our preferred suppliers are committed to using clean, renewable energy including hydro and solar power to grow their diamonds, minimising their environmental footprint, making them an environmentally conscious choice.

Can you tell that a diamond is lab grown?

No, to the naked eye, it is not possible to tell the difference between a lab-grown diamond and a natural diamond. Only an experienced gemmologist, with specialised equipment, can distinguish the difference.

Talk to an expert

Sydney: (02) 9223 2006
Melbourne: (03) 9662 3005
Brisbane: (07) 3051 0839

Last Minute Gifts

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Ready to Wear Lab Grown Engagement Rings

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