DiamondBuzz
Diamond Market Shows Resilience As Large Stones And Fancy Shapes Drive Demand
Global Sector Reports Stable Fundamentals Ahead Of Key Industry Events
The global diamond sector is maintaining overall stability, with notable strength emerging in large, high-quality stones and fancy elongated shapes, according to the latest trade intelligence.
Diamonds in the 7–9.99 carat range are experiencing robust demand, while 10-carat-and-larger sizes — particularly D-Flawless rounds — continue to sell briskly. Smaller round stones in the 0.30–0.89 carat range are also showing signs of stabilization after a period of softness.
The Bharat Diamond Bourse in Mumbai is anticipating a market recovery following a temporary Iran ceasefire, with optimism returning among regional traders. However, manufacturers are adopting a wait-and-see approach ahead of next week’s De Beers Sight April 27–30, with a modest allocation widely projected. Indian factories are preparing for May summer closures, leading to a deferral in rough buying activity.
On the supply side, Angola has forecast an 8% increase in rough diamond production for 2025, projecting output of 15.2 million carats — a development expected to support broader market supply.
Fancy elongated shapes — including ovals, marquises, and emeralds — are outperforming rounds in the 2-carat-and-larger segment. High-quality marquises are commanding the highest premiums in the market, with long radiants and long cushions also facing notable supply constraints. In India, 2-carat-plus sizes are advancing, supported by sustained U.S. demand and rough shortages that are providing upward price support for polished stones.
Israel’s market is observing a temporary pause in activity due to Memorial Day and Independence Day observances. In the United States, the National Retail Federation projects $7.5 billion in Mother’s Day jewelry sales on May 10.
DiamondBuzz
CIBJO Backs ‘synthetic’ As Sole Label For Man-Made Diamonds
CIBJO’s Laboratory-Grown Diamond Committee, Told Delegates That “Synthetic” Remains The Primary Term Recognized By Consumers, Despite A Formal Push From The Sector’s Steering Committee To Defer The Ruling and Authorize “Laboratory-Grown.”
The World Jewellery Confederation (CIBJO) has recommended “synthetic” as the only acceptable descriptor for non-mined diamonds, rejecting calls from trade leaders to permit the term “laboratory-grown,” the organization said on Monday.
The decision, finalized at the closing session of the 2026 CIBJO Congress, deepens a global divide over gemstone terminology at a time when manufactured stones are rapidly eroding the market share and pricing power of mined gems.
CIBJO’s Laboratory-Grown Diamond Committee, told delegates that “synthetic” remains the primary term recognized by consumers, despite a formal push from the sector’s steering committee to defer the ruling and authorize “laboratory-grown.”
CIBJO’s move aligns with a growing regulatory push in several major markets. France restricted terminology to “synthetic” in 2024, Russia followed suit in June, and the London Diamond Bourse endorsed the single descriptor on Sunday. In May, the African Diamond Producers Association also tightened descriptor rules to shield the natural diamond trade.
In contrast, regulators and retailers in the United States and India have favored consumer-friendly phrases such as “lab-grown” or “laboratory-grown.” The commercial stakes are particularly high in the U.S., where synthetic stones now account for more than half of all engagement ring sales by volume, applying severe downward price pressure on natural rough and polished stones.
CIBJO, which began moving to strike “lab-grown” from its influential Diamond Blue Book standards last year, warned that the diverging legal frameworks are leaving the global market increasingly fragmented.
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