Post-Las Vegas diamond demand lifts 2 ct. stones and long fancies

Post-show buying is concentrating where the margin is, and where the romance still survives: 2 ct. and larger natural diamonds, especially in long fancy shapes. Rapaport’s June 11 market comment said sentiment stayed strong after Las Vegas, with high-end jewelers carrying top luxury brands signing purchase orders and buying goods outright, a clear sign that the best product is still moving when it looks scarce, clean, and substantial.

The sharpest demand is in rounds and elongated fancies, with shortages building in the qualities buyers want most, including F-I color and VS1-SI2 clarity. Rapaport’s June 4 note pointed to the same pattern coming out of the Las Vegas shows, where retailers were actively looking for 2 ct. and up goods after the crash in synthetic prices. For dealers, that argues for buying aggressively in premium naturals with strong make and elongated outlines, then holding tight on inventory that already sits in the sweet spot.

The smaller end of the market is telling a different story. Rapaport’s May RAPI data showed 0.30 ct. stones up 2.1 percent and 0.50 ct. stones up 0.9 percent, while 1 ct. stones slipped 0.3 percent and 3 ct. stones fell 0.5 percent. That mix points to an upward price correction in smaller goods after inventories tightened, but not a clean, broad-based rally. Retailers carrying commercial melee and lower-ticket center stones should reprice with discipline rather than assume the move is permanent.

The deeper split is between natural and lab-grown demand. De Beers Group said lab-grown diamonds reached 15 percent of U.S. independent jeweler diamond sales in 2025 by value, versus 85 percent for natural diamonds, even as lab-grown volume kept rising and retail prices kept sliding. In the same report, natural diamond jewelry remained the most desired item in the U.S. consumer study, and average natural diamond jewelry prices climbed to $4,063 per piece in 2025 from $3,242 in 2023. JCK’s Las Vegas coverage put a sharper edge on that divide, noting that lab-grown diamonds grew from roughly 10 percent of engagement ring sales in 2020 to 58 percent in 2025, a shift that has left the market increasingly K-shaped.

The practical takeaway is straightforward. Buy premium naturals, especially 2 ct. plus stones and long fancies with strong color and clarity. Hold or carefully reprice smaller goods as the inventory correction works through. Shift assortment away from interchangeable product and toward pieces that look meaningfully different on the hand, because the market is rewarding distinction, not sameness.