Round Lab-Grown Diamond Three-Stone Engagement Ring

One lab-grown diamond in the middle, one round to each side, and a band that tapers so the three stones sit in a single unbroken line of light across the finger.

Three-stone rings carry a story people already know without being told, and the geometry does real work: the side rounds widen the ring's footprint, so the whole thing looks larger on the hand than its center weight alone. It is a design that photographs well and wears flat under a band.

Gifting this one is straightforward. The three-stone silhouette is recognizable across a table, which matters if you are proposing somewhere with an audience. Sized before it leaves the bench, and we will ship to you or direct to her.

The trade-off worth naming: side stones mean side prongs, and prongs on the shoulders sit closer to the world than a solitaire's do. We check and re-tip them under the lifetime warranty, and we ask for six-month prong checks rather than pretending that is unnecessary.

Pick the metal and the center below. Every ring is set and sized to order.

Stone mix, stated plainly: the center is a lab-grown diamond. The accents are natural diamonds, two round side stones, 0.54 ct tw. This ring is not entirely lab-grown, and we would rather you knew that here than found it out later.

Center options, each set to order:

• 0.50 ct lab-grown round diamond, D color, VVS1 clarity, Ideal cut, IGI-graded (report LG776670022), 5.18 mm
• 0.75 ct lab-grown round diamond, D color, VVS1 clarity, Ideal cut, IGI-graded (report LG777616554), 5.82 mm
• 1.00 ct lab-grown round diamond, D color, VVS1 clarity, Ideal cut, IGI-graded (report LG772644326), 6.37 mm
• 1.25 ct lab-grown round diamond, D color, VVS2 clarity, Ideal cut, IGI-graded (report LG625407469), 6.84 mm

Prices shown are the complete ring: mounting, center and any accents, in the metal you choose. Want a different center? Contact our concierge and we will hand-select one and quote the whole ring honestly.

Every order ships free and fully insured by UPS Ground; orders of $500 or more ship by complimentary UPS Express, signature required on delivery (a $50 upgrade below that). The ship estimate for your selection is shown beside the price.

Rings are final sale. Every ring is made or sized to your ring size, and engagement rings are set with the center stone you choose, so a ring can’t be returned or exchanged for a refund or another size. Please confirm your size before you order; our concierge is glad to help. If a ring arrives damaged, defective or not as ordered, tell us within 7 days and we’ll make it right, and every piece carries our free lifetime warranty against manufacturing defects.