The average price of a natural diamond engagement ring in the US climbed to $7,346 in 2025, marking a 9% increase from the previous year, according to a new industry report from the Natural Diamond Council (NDC) and analytics firm Tenoris. The findings, based on more than 4 million transactions across 2,500 specialty jewelry retailers, point to a clear trend: couples are choosing larger diamonds and more expressive designs to mark their engagements.
Size played a major role in the price increase. The average center stone grew 5% to 1.16 carats, reflecting steady consumer interest in diamonds that make a stronger visual statement. In fact, the fastest growth occurred in larger categories, particularly stones weighing 1.50–1.59 carats and 2.00–2.24 carats — further evidence that many buyers are moving beyond the traditional 1-carat benchmark.
While round brilliant diamonds remain the dominant choice, accounting for 62% of engagement ring sales, the report highlights growing momentum for fancy shapes. Elongated and distinctive cuts — including marquise, cushion and other non-round styles — are gaining traction as couples look for rings that feel more personal and unique.
Celebrity influence has helped fuel this shift. High-profile engagement rings worn by stars such as Selena Gomez, Taylor Swift and Zendaya showcased elongated and vintage-inspired shapes throughout 2025, encouraging consumers to explore alternatives to classic designs. The marquise shape alone posted notable year-over-year growth, signaling continued interest in statement silhouettes.
Overall, engagement rings — including finished pieces, loose center stones and semi-mounts — represented 38% of all natural diamond jewelry sales by volume, underscoring the category’s central role in the diamond market.
Looking ahead, the NDC expects generational change to further reshape buying patterns. Gen Z consumers (born between 1997 and 2012) are projected to remain the fastest-growing segment of diamond buyers in 2026. Younger shoppers are placing greater emphasis on individuality, storytelling and self-expression, trends that align with the rise of larger stones, distinctive cuts and bespoke design details.
Another emerging shift involves male consumers. The report notes that young men are increasingly likely to make their first diamond purchase in 2026, driven in part by the growing visibility of men wearing diamonds on red carpets and at major events. Appearances by style leaders such as Timothée Chalamet and Colman Domingo at the Golden Globes have helped normalize diamonds as a fashion choice beyond traditional bridal gifting.
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