• Thea | 2.5ct Radiant Lab Diamond Engagement Ring – Front view, Matthews Jewellers Newcastle
  • Thea | 2.5ct Radiant Lab Diamond Engagement Ring – Three-quarter view, Matthews Jewellers Newcastle
  • Thea | 2.5ct Radiant Lab Diamond Engagement Ring – Side profile view, Matthews Jewellers Newcastle
  • Thea | 2.5ct Radiant Lab Diamond Engagement Ring – Close-up detail view, Matthews Jewellers Newcastle
  • Thea | 2.5ct Radiant Lab Diamond Engagement Ring – On hand view, Matthews Jewellers Newcastle
Thea | 2.5ct Radiant Lab Diamond Engagement Ring – Front view, Matthews Jewellers Newcastle
Thea | 2.5ct Radiant Lab Diamond Engagement Ring – Three-quarter view, Matthews Jewellers Newcastle
Thea | 2.5ct Radiant Lab Diamond Engagement Ring – Side profile view, Matthews Jewellers Newcastle
Thea | 2.5ct Radiant Lab Diamond Engagement Ring – Close-up detail view, Matthews Jewellers Newcastle
Thea | 2.5ct Radiant Lab Diamond Engagement Ring – On hand view, Matthews Jewellers Newcastle
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SKU: 1-9687

Thea | 2.5ct Three Stone Radiant and Trapezoid Engagement Ring

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$6,740.00 AUD
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Dispatch Available Tuesday, July 21

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Product Details

The Thea Diamond Engagement Ring sets a 2ct radiant cut lab grown diamond centre against two brilliant-cut trapezoid side diamonds totalling 0.56ct. The three-stone ring represents past, present and future all set in 18k yellow gold.  

Centre Carat Weight: 2.00ct Lab Grown Diamond

Colour: E

Clarity: VVS2

Report Number: IGI 779660511

Setting Style: Cathedral Three Stone

Accent Diamonds: 2 Brilliant Cut Trapezoids = 0.56ct

Band Width: 2.10mm x 1.50mm

Metal Colour: 18k Yellow Gold

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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