--- title: "Round and Trillion Diamond Engagement Ring" description: "A round brilliant lab diamond engagement ring with trillion side stones, in platinum or gold. Made to order in our New York flagship." canonical: "https://www.adadiamonds.com/lab-diamond-engagement-rings/round-and-trillion-setting-072" last-updated: "2026-11-10" --- # Round and Trillion Setting > A round brilliant lab diamond engagement ring with trillion side stones, in platinum or gold. Made to order in our New York flagship. A dazzling setting featuring a pair of trillion (rounded edges) or triangular brilliant (straight edges) lab grown diamonds. Available in a basket or trellis style. ## Details | Attribute | Value | | --- | --- | | Design number | AD-072 | | Style | Three Stone · Basket | | Price (setting only) | $2,450 in gold; $2,750 in platinum or two-tone | | Center stone | Sold separately; choose any compatible lab diamond | | Center stone shapes | Round | | Metals | 18k White Gold, 18k Yellow Gold, 14k Yellow Gold, 18k Rose Gold, 14k Rose Gold | | Platinum and two-tone | Platinum, Platinum & 18k Yellow Gold, Platinum & 14k Yellow Gold, Platinum & 18k Rose Gold, Platinum & 14k Rose Gold | | Band widths | 1.8mm, 2.0mm, 2.2mm, 2.4mm | | Band shapes | Rounded, Knife Edge, Euro, Tapered, Square, Custom | | Prong styles | Round Prongs, Claw Prongs, V-Prongs, Square Prongs, Dual Round Prongs, Dual Claw Prongs | | Default build | 1.8mm, Rounded, Claw Prongs | | Engraving | Available | | Lead time | Made to order; ships in 3-4 Weeks | | Made in | New York City | ## Pricing Your Choice of Gold: Triangular Brilliants (Straight): 3.25mm Side Stones (~0.2ctw): $2,450 USD 3.5mm Side Stones (~0.3ctw): $2,550 USD 4mm Side Stones (~0.4ctw): $2,650 USD 4.5mm Side Stones (~0.5ctw): $2,750 USD 4.75mm Side Stones (~0.6ctw): $2,900 USD Trillions (Rounded): 4mm Side Stones (~0.4ctw): $2,650 USD 4.5mm Side Stones (~0.5ctw): $3,150 USD 5mm Side Stones (~0.8ctw): $3,450 USD 5.5mm Side Stones (~1.0ctw): $3,750 USD _Starting at price is for the setting and side stones only (center stone priced separately) and includes DEF/VS lab grown diamond side stones. Platinum and two-tone available for an additional $300 fee. Subject to availability; all side stone weights and measurements are approximate._ ## Compatible center diamonds - Round: 57 in stock, 1.21–5.03 ct, from $1,325 Browse them: · search by API: ## Shipping and returns - Free shipping in the US; international shipping $75. - 30-day returns by mail ($50 return label). Full terms: ## Images ![Lab Created Diamonds set in White Gold Round and Trillion Setting (Main View)](https://content.adadiamonds.com/image/upload/v1711130169/Diamonds-in-White-Gold-Round-and-Trillion-Setting_Main-View_Product-Number-072.webp) ![Diamonds set in White Gold Round and Trillion Diamond Engagement Ring (Profile View)](https://content.adadiamonds.com/image/upload/v1711130169/Man-Made-Diamonds-in-White-Gold-Round-and-Trillion-Setting_Profile-View_Product-Number-072.webp) ![White Gold Round and Trillion Setting featuring Lab Diamonds (Side View)](https://content.adadiamonds.com/image/upload/v1711130169/White-Gold-Round-and-Trillion-Setting-with-Lab-Diamonds_Side-View_Product-Number-072.webp) ![2ct lab diamond in trillion setting](https://content.adadiamonds.com/image/upload/v1691556816/2ct-lab-diamond-with-trillion-side-stones_1644117520891-X3AGGAYU72KM4KZPLQA3.jpg) ![round and trillion three stone lab diamond engagement ring in yellow gold](https://content.adadiamonds.com/image/upload/v1691556826/round-and-trillion-three-stone-ring-yellow-gold_1625503857890-ZDLIDZTT9MHF7DG4CN2C.jpg) ![Trillion Setting Lab Grown Diamond Engagement Ring AD072](https://content.adadiamonds.com/image/upload/v1691556817/round-and-trillion-engagement-ring-yellow-gold_1554822914407-JK2PNXTY0U81TOU38XQU.jpg) --- Canonical URL: