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  5. 3.5 CT Classic Round Three Stone Lab Grown Diamond Engagement Ring
Yellow gold 3.50 CTW lab grown diamond round cut three stone engagement ring, front view
Yellow gold lab grown diamond round cut three stone engagement ring, angled view
Rose gold 3.50 CTW lab grown diamond round cut three stone engagement ring, front view
White gold lab grown diamond round cut three stone engagement ring, angled view
White gold 3.50 CTW lab grown diamond round cut three stone engagement ring, front view
Rose gold lab grown diamond round cut three stone engagement ring, angled view
Yellow gold 3.50 CTW lab grown diamond round cut three stone engagement ring, front view
Yellow gold lab grown diamond round cut three stone engagement ring, angled view
Rose gold 3.50 CTW lab grown diamond round cut three stone engagement ring, front view
White gold lab grown diamond round cut three stone engagement ring, angled view
White gold 3.50 CTW lab grown diamond round cut three stone engagement ring, front view
Rose gold lab grown diamond round cut three stone engagement ring, angled view
360 degree video of 3.50 CTW round cut lab grown diamond engagement ring

3.5 CT Classic Round Three Stone Lab Grown Diamond Engagement Ring

$812.00
In Stock
Metal: 925 Silver
Ring size:

Luzora · Fit

Find your ring size

Three ways to get there. If you already own a ring that fits the right finger, the on-screen gauge is the most accurate.

Step 1 — Calibrate your screen

Hold any credit, debit or ID card against the screen and drag until the widths line up exactly. Every card in the world is the same size, so this makes the measurements below true to life.

85.60 mm
Step 2 — Match your ring

Rest the ring flat on the screen and resize the circle until it sits just inside the band, touching but not hidden.

Measure warm

Fingers shrink in the cold. Measure at the end of the day, at room temperature, for the size you will actually wear.

Wide bands run tight

Anything above 6 mm wide sits closer to the skin. Go up half a size for comfort.

Between two sizes

Choose the larger one. A ring has to pass the knuckle, and a slightly loose band can be sized down more easily than a tight one can be opened.

Still unsure

Email your measurements and we will confirm before the piece goes into production. Every Luzora ring is made to order.
Quantity
Metal 925 Silver Ring size Choose size IGI Certified Carat 3.5 CTW
White gold lab grown diamond round cut three stone engagement ring, angled view

Here's what you'll get

3.5 CT Classic Round Three Stone Lab Grown Diamond Engagement Ring

Metal 925 Silver
Ring size Choose size
Accent Stones 2 x round cut 0.5 ct each (5.00 mm)
Total Carat Weight 3.5 CTW
Total Diamonds 3

Included with your order

  • Luzora Jewelry Certificate
  • Presentation packaging
  • Insured tracked delivery
Your price $812.00

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  • Free shipping, no minimum

  • Interest-free monthly payments

  • 16-day returns

  • Gift packaging available

White gold lab grown diamond round cut three stone engagement ring, angled view
3.5 CT Classic Round Three Stone Lab Grown Diamond Engagement Ring
Metal 925 Silver Ring size
Add to cart

A commanding round centre is flanked by two generous round side diamonds — a big, brilliant three-stone that fills the finger with light. Timeless proportions scaled up for real presence.

Why you'll love it

  • A 2.5 ct round centre with a 0.5 ct round diamond on each side — 3.5 total carats.
  • Three matched round brilliants deliver maximum fire from every angle.
  • Grown, cut, and set entirely under one roof — no middlemen, ever.
  • Lab grown brilliance and size at a fraction of a mined-diamond price.

Every diamond is G colour or better, VS clarity or better, and IGI certified.

Made to order in 925 sterling silver, 10K / 14K / 18K yellow, white & rose gold, and platinum.

Free shipping, easy 30-day returns, and a lifetime warranty on every Luzora piece.

Diamond Details
Centre Stone 2.5 ct round cut lab grown diamond (8.70 mm)
Accent Stones 2 x round cut 0.5 ct each (5.00 mm)
Total Carat Weight 3.5 CTW
Total Diamonds 3
Setting Three stone, six-prong centre + four-prong sides
Diamond Quality G colour or better, VS clarity or better, IGI certified
Ring Details
Band Width ~2.45 mm, tapered
Ring Size US 5–14 (made to order)
Setting Three round brilliants, prong-set
Profile Large round centre with round sides on a plain polished band

Free shipping across the US, UK and Australia — no minimum. Every order is tracked and insured door to door.

  • Standard shipping: 5–10 business days
  • Every stone ships with its IGI report — the grade is on the page, not behind an email
  • 16-day returns on unworn, unresized pieces

Made to the hand: sizes 4–13 as standard, five metals, and free resizing in the first 60 days.

  • Hand-set, hallmark-ready — built for a hand that washes dishes
  • Free resizing within 60 days of delivery
  • Sizing help and straight answers, before the sale and after it

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