Helena 4ct lab grown diamond oval engagement ring in Platinum, Matthews Jewellers Newcastle
Helena 4ct lab grown diamond oval engagement ring in Platinum, Matthews Jewellers Newcastle
Helena 4ct lab grown diamond oval engagement ring in Platinum, Matthews Jewellers Newcastle
Helena 4ct lab grown diamond oval engagement ring in Platinum, Matthews Jewellers Newcastle
Available Now

Helena | 4ct Oval Lab Diamond Engagement Ring

$8,490.00 AUD $7,216.50 AUD
Tax included.

Same day resize and shipping before 1pm

SKU: 1-9676

Product Details

Platinum and a 4ct oval are a combination that suits each other. The cool, dense weight of platinum keeps the ring from reading as flashy despite the diamond's size, and the metal's durability suits a stone with this much value behind it.

Helena at 4ct uses a cathedral setting with hidden halo. The halo adds brightness at the stone's perimeter without making the ring's profile visually wider from above.

F / VVS2, IGI certified (764626401), 4.03ct lab-grown oval. Designed and made by Matthews Jewellers, Newcastle. Fine jewellers since 1957.

Centre Carat Weight: 4.03ct Lab Grown Diamond

Colour: F

Clarity: VVS2

Report Number: 764626401

Setting Style: Cathedral

Band Width: 2.5 mm x 1.8mm

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.

30 Day Free Returns

Changed your mind? No problem.

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.


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.

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 2-3 business days for dispatch. 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.

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.

Ring Sizing Guide
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Visit Us

Our Newcastle boutiques are where it all comes to life. Book an appointment online or in-store at our Kotara or Darby St boutiques and talk with our experienced team.