
1 Carat Lab-Grown Engagement Rings, Adelaide
A 1 carat diamond is the size most couples ask us about first. With a lab-grown diamond it is within reach in any of our designs, so you can choose the ring you love rather than the one the budget allows.
Below are today’s prices for a complete 1 carat ring in every shape we make, each with an IGI-certified lab-grown diamond. Every ring is designed in our King William Street boutique in Adelaide and Australian made to order.
Today’s prices · about 1 carat
A 1 carat lab-grown diamond ring, priced as the finished ring
Every price below is a complete engagement ring with an IGI-certified lab-grown diamond of about 1 carat, read from our catalogue today. Choose a ring and you then pick your exact diamond from Simon’s five; the price follows the stone you choose.
From, any metal$1,700
From, 18ct white gold$3,050
Round, 18ct white gold$3,050
Prices in AUD, including GST and your diamond. Made to order, Australian made.
Comparing sizes? See today’s 2 carat prices.
Most loved
Our most loved designs at 1 carat
What you are buying
What a 1 carat ring from us includes
A diamond chosen to a published standard
Simon’s five are selected from the certified lab-grown diamonds available today: D to G colour, VS2 to VVS1 clarity, excellent cut and polish, no fluorescence, IGI certified. Most can be turned in 360° before you choose.
How big a 1 carat diamond is
A 1 carat round brilliant measures about 6.5mm across. Ovals, pears and emerald cuts of the same weight look longer, and can look larger on the hand. Each ring page draws your stone to scale.
Made to order
Designed in our King William Street boutique and Australian made, set and hand-finished by our own jewellers. Most rings take four to six weeks. For Christmas, order or approve your design by Tuesday 1 December.
With every ring
- Your IGI certificate and a valuation for insurance
- Your first resize, and a clean and check whenever you visit
- Complimentary delivery in Australia, or collect from the boutique
Questions
Buying a 1 carat lab-grown diamond
How much is a 1 carat lab-grown engagement ring?
Today, from $1,700 for a complete ring with an IGI-certified lab-grown diamond of about 1 carat, and from $3,050 in 18ct white gold. Every price on this page is the finished ring, read from our catalogue today.
How big is a 1 carat diamond?
A 1 carat round brilliant measures about 6.5mm across. Ovals, pears and emerald cuts of the same weight look longer, and can look larger on the hand.
Is a lab-grown diamond a real diamond?
Yes. It is carbon crystallised in the same structure as a natural diamond, with the same hardness and sparkle. The difference is where it formed. Ours come with an IGI certificate, and every listing says lab-grown.
Natural or lab-grown: what is the price difference?
Most of our designs are made in both, so you can compare the same ring side by side. See today’s natural and lab-grown prices for five designs. Natural diamonds come with a GIA certificate.
Can I see the diamond before I buy?
Online, most of Simon’s five can be turned in 360° with their full grades. In person, book a private viewing at Level 1, 14 King William Street and Simon will take you through the stones.
How long does it take?
Every ring is made to order, and most take four to six weeks.
Can I change the metal, setting or carat?
Yes. Every ring is made to order in 9ct, 14ct or 18ct gold or platinum, and every design is offered at 1.00, 1.50, 2.00 and 3.00 carats. If you would like something changed, tell us at your viewing or when you order.
In their words
“They were knowledgeable, patient, and genuinely helpful in finding the perfect ring.”
Will J. · engagement ring“8 years later my rings are still going strong and I still love them!!”
Lauren B. · after her yearly check“My husband had never bought jewellery before and they made him feel so comfortable.”
Amber R.
Not ready to choose a time?
Tell Simon about your 1 carat ring
A few lines is enough. We’ll come back to you with ideas, honest guidance on budget, and a time to meet Simon when you’re ready.


