5 Carat Round Lab-Grown Diamond Rings, grown in light.
A full five carats, cut round. These rings come holding a 5-carat round lab-grown diamond, and one figure covers ring and stone together. Of all outlines, the round brilliant scatters the liveliest sparkle, and at this weight it carries across a room. On the product page you settle on white, yellow or rose gold or platinum, then the shank that suits your hand.
$3,804 $7,608
$3,374 $6,748
$3,374 $6,748
$3,374 $6,748
$4,124 $8,248
$3,534 $7,068
$3,534 $7,068
$3,534 $7,068
$5,064 $10,128
$4,004 $8,008
Why round at five carats
A round brilliant's 57 or 58 facets are angled to bounce light back up through the top, which is why it out-sparkles every fancy outline. With no points to chip and no corners to snag, it also suits a stone perched this high. A 5 carat round engagement ring spans roughly 11 mm, about the face of a shirt button.
Solitaire or hidden halo
- Bare solitaire: a smooth rounded shank, the quietest home for a big round.
- Pavé shoulders: tiny lab-grown diamond accents climb toward the head.
- Hidden halo: a concealed collar of accents tucked beneath the round, shown only in profile, plus pavé along the shank.
Gold or platinum around the center
Platinum is dense and white to its core, so it wears away slowly and grips prongs for decades. White gold mimics that look for less outlay. Yellow and rose gold add warmth and push a colorless round toward ice. Shank widths sit between roughly 1.8 and 2.5 mm.
Day-to-day care for a 5-carat round
Hand cream and soap residue cloud a large stone fast, so give it a weekly dip in sudsy lukewarm water, then scrub gently under the head. Book a prong inspection yearly; the tallest point on the hand takes the most knocks.
Ring questions, answered.
How do I choose an engagement ring?
Start with the shape she loves, then the setting style. Our gemologists can help you balance carat, cut and budget on a free video call.
Can I build my own engagement ring?
Yes — pick a setting, then a diamond, and review the finished ring before it goes to the bench.
Does the diamond price include the setting?
Diamond and setting are priced separately in the ring builder, and the total is shown before you add the ring to your bag.
How do I find my ring size?
Use our ring size guide, or order a free ring sizer — it arrives in 2–3 days.
Can I return or resize my ring?
You can return it within 30 days (a 10% restocking fee applies to resized or engraved pieces), and your first resize within 60 days of delivery is free.
Should I insure my engagement ring?
We recommend it. Every ring ships fully insured; once it is yours, a separate jewelry insurance policy covers loss, theft and accidental damage.
