'Fiona' Cushion Cut Lab Grown Engagement Ring
- You approve every design before it’s made
- Complimentary resizing
- Lifetime care at our boutique
- No obligation — start with a conversation
Price includes your IGI-certified lab-grown diamond · Australian made · made to order
From $2,000 in 9ct gold at 1.00ct — shown here at 1.00ct in 18kt White Gold.
The same design with a natural diamond: $5,700 in 18kt White Gold at 1.00ct.
Sizes above P may carry a small additional charge for the extra metal — we'll confirm when we quote. Not sure of your size? Pop in for a quick fitting at our Adelaide boutique.
Simon's five
Choose your stone
We have access to thousands of certified lab-grown diamonds. From what is available today, Simon's rules select five that meet his standard — colour D to G, clarity VS2 to VVS1, excellent cut and polish, no fluorescence, IGI certified — from the most affordable to the finest. He confirms your stone and its certificate personally before it is set.
Finding today's five…
Your stone
IGI certified. The certificate number is provided once your stone is secured. Simon confirms the stone and its certificate personally before it is set.
Please choose your finger size above first. Not sure? Choose “Not sure” and your first resize is complimentary.
Paid in full at checkout; we secure your stone straight away. If it has been sold in the meantime, you choose an equal stone at the same price, or a full refund. Certificate number provided once your stone is secured.
Free delivery in Australia, or collect from our King William Street boutique. As your ring is custom made, we’ll contact you when it’s ready. For Christmas, order by Tuesday 1 December.
Made to order around you — with Simon Dimasi at Level 1, 14 King William Street, by private appointment. No obligation.
“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.
IGI certified
An IGI certificate with your diamond
Australian made
Designed in our King William Street boutique, since 2001
Complimentary first resize
And a clean & check, any time you visit
Four to six weeks
Made to order — urgent? Talk to Simon
Every piece is made to order around you. Prefer a size or detail not shown? Talk to us directly. Platinum or 18kt gold — the craftsmanship is identical, which is why the price often is too.
The ‘Fiona’ is made to order around a cushion lab-grown diamond that you choose. It is available in platinum, or 18ct, 14ct or 9ct white, yellow or rose gold.
Choose your exact stone on this page with Simon’s five: IGI-certified lab-grown diamonds in D to G colour and VS2 to VVS1 clarity, with excellent polish and symmetry and no fluorescence, selected by Simon’s published standard. You can view each stone in 360° before you buy, and Simon confirms your stone and its certificate personally before it is set.
Designed in our King William Street boutique, Australian made, and set and hand-finished by our jewellers. For a size or detail not shown, book a private viewing.
To scale
On your hand
Choose options
Exact size
Your stone, drawn to scale
Shown to scale on an average finger (~16.5 mm wide). Indicative only — your final ring is made to your chosen carat and finger size.