The Trillion, Turned UpA bestselling favorite, now with even more brilliance.. Our cult-classic Trillion Diamond Stacking Ring just got a glow-up. Now available in small and medium sizes, this modern triangle cut catches the light from every angle—elevating your stack with an edge that’s subtle, sculptural, and seriously stunning.. Choose the Small Trillion for .25ctw of crisp geometry, or the Medium Trillion for a bold .39ctw flash of sparkle. Crafted in 14k solid gold and set with ethical lab-grown diamonds, these rings are made to order and ship in 2–3 weeks. Available in yellow or white gold.. Perfect worn solo or stacked with its mini counterpart, the Trillion is proof that everyday elegance doesn’t have to play it safe.