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SKU: 1-9608

Helena | 3ct Oval Lab Diamond Engagement Ring

$7,740.00 AUD
Tax included.
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Dispatch Available Wednesday, July 22

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Product Details

Platinum suits a 3ct oval well. The dense, cool metal keeps the ring grounded without pulling warmth from the diamond. This Helena centres a 3.15ct lab-grown oval in a cathedral setting in platinum, with 14 accent diamonds along the shoulders.

F / VVS2, IGI certified (750570375). Designed and made by Matthews Jewellers, Newcastle. Fine jewellers since 1957.

Centre Carat Weight: 3.15ct Lab Grown Diamond

Colour: F

Clarity: VVS2

Report Number: 750570375

Setting Style: Cathedral

Accent Diamonds: 14 Diamonds = 0.30ct

Band Width: 2.1mm x 1.5mm

Metal Colour: Platinum

Finger Size: M

Free re-sizing and shipping available within 24 hours of purchase (Monday to Friday).

20% off your Wedding Rings

Enjoy 20% off your wedding rings and 10% back in Matthews Money when you purchase your engagement ring with us.

Shipping and Timing


We offer complimentary Express Shipping Australia-wide on all orders. Each piece is carefully packaged and fully insured for peace of mind during transit.

For ready-to-wear items, please allow 24hours for dispatch (Monday to Friday).

Made-to-order and custom pieces typically take 6–8 weeks. Need it sooner? Contact us—we’ll do our best to accommodate your timeline.

why choose us

Luxury Without Compromise

30-Day Free Returns

30-Day Free Returns

We offer free 30-day returns on all Ready to Wear pieces purchased online.

Simply contact us for a free prepaid satchel - just ensure your item is in its original boxing before sending it back.

Your original postage bag is reusable, so place your item inside, seal it up, and send it our way.

Our Guarantee

Our Guarantee

With decades of experience and a proud family legacy, we stand behind every piece that leaves our workshop. Each item is a reflection of our craftsmanship, integrity, and care—backed by our Lifetime Guarantee. When you choose us, you're choosing quality that lasts a lifetime.

Complimentary Resizing

Complimentary Resizing

We offer complimentary resizing for the lifetime of your engagement ring. If you need your ring resized before it’s shipped, please let us know and include your preferred size in the notes section at checkout.

Not sure on the size? Your piece can be resized after your proposal. Get in touch and we can organise this.

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