The Diamond Store reveals the engagement ring trends shaping 2026
New customer data from The Diamond Store reveals a shift towards elevated, individual versions of timeless engagement ring styles, with oval diamonds, trilogy settings, and coloured gemstones among the fastest-growing trends. Oval is is becoming the modern classic - round diamonds remain the most popular choice overall, but oval is the fastest-growing core diamond shape, with sales up 74.7% year-on-year. The elongated silhouette offers a point of difference while retaining the timeless appeal of a diamond engagement ring, helping oval move from trend-led alternative to modern staple. The trilogy ring is back - this traditional three-stone engagement ring is enjoying a revival, with trilogy styles up 72.6% year-on-year, making it the fastest-growing setting style in the data.