Natural diamonds gain appeal as buyers seek rarity and customization

At Wynn Las Vegas, Amber Pepper made the case that natural diamonds are gaining power not by looking broader, but by feeling more personal. Speaking at a COUTURE opening-night reception on May 27, the new chief executive of the Natural Diamond Council said competition from lab-grown stones was sharpening the value of rarity, provenance and emotional meaning just as younger buyers are leaning harder into individuality, customization and self-purchase.

That argument landed in a room built for high-end discovery. COUTURE, which ran through May 31, has positioned itself as the U.S. destination for designer fine jewelry and luxury timepieces, with retailers such as Bergdorf Goodman, Marissa Collections, TWIST, Reinhold Jewelers, Borsheims and Neiman Marcus among its regular audience. Pepper’s message suggested the category’s next luxury chapter cannot simply be about price or prestige. For natural diamonds to keep their hold on younger buyers, the story has to live inside the ring itself, in a center stone chosen for a birthday, a milestone, or a redesign that turns an inherited jewel into something unmistakably personal.

The numbers around the market help explain why that pitch has traction. The Natural Diamond Council’s Natural Diamond Trends 2025 report, published February 9, drew on more than four million jewelry transactions from 2,500 U.S. specialty jewelers. It found natural-diamond sales rose 2.1 percent in 2025, average jewelry prices climbed 10 percent, marquise pieces increased 12 percent, and center stones between 2.00 and 2.24 carats grew 9 percent. Holiday, Valentine’s Day and Mother’s Day accounted for a large share of volume, a reminder that the category still moves most when emotion is explicit, not abstract.

That is the pressure point for custom engagement rings, bespoke redesigns and made-for-me storytelling at the high end. Pepper’s emphasis on rarity makes sense alongside the council’s own lab-grown analysis, which said wholesale prices for a 1-carat round near-colorless lab-grown diamond had fallen 95 percent since 2018. In a market where the alternative can be manufactured at scale, natural diamonds are being pushed to justify themselves through scarcity, geological age and identity. The council says they formed deep within the Earth up to 3.5 billion years ago; the luxury task now is turning that fact into a feeling that still sounds specific to one buyer, one occasion and one stone.

Pepper’s broader platform is widening too. The Gem & Jewellery Export Promotion Council signed a memorandum of understanding with the Natural Diamond Council on February 9 during the second high-level Luanda Accord meeting at the African Mining Indaba in Cape Town, clearing the way for GJEPC to join from May 1. Namibia also became a signatory at that meeting. For an industry trying to defend natural diamonds without sounding generic, the challenge is no longer only to prove origin. It is to make origin feel intimate, relevant and worth choosing again.