Cushion-cut lab-grown diamond three-stone ring with trillion sides in white gold by THE LAB Jewellers
Alexandra — Cushion and Trillion Three-Stone Lab-Grown Diamond Ring — worn on the hand
Alexandra — Cushion and Trillion Three-Stone Lab-Grown Diamond Ring — worn, angled detail
Cushion-cut lab-grown diamond three-stone ring with trillion sides in yellow gold by THE LAB Jewellers
Cushion-cut lab-grown diamond three-stone ring with trillion sides in rose gold by THE LAB Jewellers
Cushion and Trillion Three-Stone Lab-Grown Diamond Ring, white gold view 1
Cushion and Trillion Three-Stone Lab-Grown Diamond Ring, white gold view 2
Cushion and Trillion Three-Stone Lab-Grown Diamond Ring, white gold view 3
Cushion and Trillion Three-Stone Lab-Grown Diamond Ring, white gold view 4
Cushion and Trillion Three-Stone Lab-Grown Diamond Ring, yellow gold view 1
Cushion and Trillion Three-Stone Lab-Grown Diamond Ring, yellow gold view 2
Cushion and Trillion Three-Stone Lab-Grown Diamond Ring, yellow gold view 3
Cushion and Trillion Three-Stone Lab-Grown Diamond Ring, yellow gold view 4
Cushion and Trillion Three-Stone Lab-Grown Diamond Ring, rose gold view 1
Cushion and Trillion Three-Stone Lab-Grown Diamond Ring, rose gold view 2
Cushion and Trillion Three-Stone Lab-Grown Diamond Ring, rose gold view 3
Cushion and Trillion Three-Stone Lab-Grown Diamond Ring, rose gold view 4
Cushion and Trillion Three-Stone Lab-Grown Diamond Ring — 360° spin video

Alexandra — Cushion and Trillion Three-Stone Lab-Grown Diamond Ring

Made to order — dispatches in approximately two working weeks
Regular price£1,895.00
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Shipping calculated at checkout.

Metal
  • Free insured UK delivery on every order

Made in your size at no extra cost. Ring size guide

Not sure of your size? Order a strap sizer — it is £5.00, and we email the full £5.00 straight back to you as store credit, so it comes off the price of your ring.

Diamond quality

D–F colour  ·  VS1 clarity or better

Every diamond is lab-grown, D–F colour and VS1 clarity or better. Round brilliant diamonds can receive a formal cut grade; fancy shapes are assessed through their proportions, polish, symmetry and overall make. Any piece with a centre stone of 1.00ct or more includes an independent IGI grading report or GIA quality assessment as standard.

A cushion-cut lab-grown diamond centre framed by two trillion-cut side stones in a classic three-stone layout. The soft squared centre and crisp triangular sides balance curve against angle.

The cushion centre is set between two trillion diamonds that sit flush to the shoulders, meeting the band. A plain polished shank keeps all the attention on the three stones.

  • Stone type: Lab-grown diamond
  • Stone shape: Cushion centre with trillion sides
  • Stones: 1 × 7.00mm cushion centre (1.78ct) and 2 × 3.75mm trillion sides (0.155ct each)
  • Stone count: 3 diamonds
  • Total diamond weight: Approx. 2.09ct
  • Certificate: includes an independent IGI grading report for the centre stone, at no extra cost.
  • Metal options: 14kt or 18kt White, Yellow or Rose Gold

Ring Size

This ring is made to order in your size. Choose your UK ring size above — there is no extra charge for any size. If you are unsure of your size, our ring sizer makes it easy at home — and your £5 comes straight back to you as a gift card. Standard UK sizes are available — if you need guidance, contact us before placing your order.

Made to Order

Every piece is crafted to your chosen metal and ring size. Our usual production lead time is approximately two working weeks before dispatch. More complex pieces may take slightly longer. We confirm the expected timeframe in writing before production begins.

Styling

A three-stone ring carries a sense of past, present and future, making it a meaningful engagement or anniversary piece. It sits neatly against a plain band.

Jewellery Care

Store separately in the pouch or box provided. Avoid contact with harsh chemicals, perfume, and chlorine. Clean gently with a soft cloth or mild soap solution. Remove before swimming, exercising, or sleeping. See our Materials & Care guide for full instructions.

Need help choosing?

Unsure on size, metal, or diamond specification? Email us and we'll guide you to the right option before you order — we reply personally, within two working days.

All pieces are made to order and dispatch in approximately two working weeks, fully insured and tracked. UK delivery is free on every order. See our Shipping & Delivery and Returns & Refunds pages for full details.

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