Three Stone Lab Grown Diamond Engagement Rings
Choose a trilogy ring with a lab-grown diamond center and two principal side stones. Explore round, oval, marquise, emerald-cut and cushion designs in available gold colors. Compare each ring’s center weight, side-stone details and setting profile below to find your preferred combination.
Browse the collection: Page 1 · Page 2. Use the product loader to continue through the remaining designs.
3 CT Dutch Marquise Three Stone Lab Diamond Ring
Lozenge Lab Diamond Ring with Kite Side Stones
Compare three-stone shapes and proportions
Three-stone engagement rings pair a center diamond with two principal side stones; additional pavé or hidden-halo accents may also be present. They are individual rings, rather than three-ring bridal sets. Available combinations include round centers with pear sides, oval centers with pears or tapered baguettes, marquise centers with pears or kites, and elongated cushions with trillions. Selected lozenge and marquise designs explicitly specify lab-grown side diamonds. Check the center and side-stone materials separately on each listing; ask us to confirm any unspecified diamond origin.
Compare stone dimensions and the side-to-center proportions alongside carat weight. An east-west emerald setting creates a different outline from an upright oval or marquise. Browse more oval, round and marquise ring designs, checking the gemstone type on each listing.
Understand diamond weights and grading reports
Center-stone carat weight, combined side-stone weight and total ring carat weight describe different quantities. For example, the oval and tapered-baguette design lists a 2.00 CT center plus 0.70 TCW of side diamonds, approximately 2.70 TCW overall. Hidden-halo and pavé accents can add further weight. Confirm whether a side-stone figure is combined or per stone before ordering.
IGI inclusion varies: some listings include a center-diamond report, others offer certification separately or require confirmation. Request the selected stone’s report and confirm coverage and any charge; a center report does not certify every side or accent diamond. Lab-grown diamonds are diamonds grown in a laboratory; moissanite is a different gemstone. See our diamond and moissanite comparison.
Choose your metal, size and wedding-band pairing
Selected rings offer 10K, 14K and 18K yellow, white or rose gold, alongside 925 silver. Choose the available variation on the product page. Compare open baskets, cathedral shoulders, trellis galleries, prongs and decorative shanks in the side-view photographs. Confirm setting height and band measurements when not listed.
Use our ring-size guidance and identify your sizing system. Ask about custom design and engraving before production. For a coordinating wedding band, confirm clearance for the specific pair: a straight band may leave a gap, and a curved band also needs a fit check. Resizing feasibility and charges depend on the design.
Ordering for the United States and Canada
The store offers shipping to the USA and Canada and desktop currency options for USD and CAD. Production and delivery estimates vary; check the selected product and confirm your delivery address, timing, duties, taxes and warranty terms with us. Production time is separate from courier transit, and estimates are not arrival guarantees.
Review the return and exchange policy before ordering. Custom-made, modified and personalized pieces are restricted, and engraved items are excluded from refunds or exchanges. Confirm the terms for your made-to-order ring before approving customization. Explore the full lab-grown engagement ring collection, or choose a three-stone design above to compare its purchase options.
