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Monthly Brief: Natural Diamond Production Hits Multi-Decade Lows in 2026

September 1, 2026

Monthly Brief: Natural Diamond Production Hits Multi-Decade Lows in 2026

Global natural diamond supply reaches its lowest level since the 1980s, impacting inventory availability for high-carat stones.

Supply Constraints in the Natural Market

Industry analyst Paul Zimnisky reports that natural diamond production will remain at multi-decade lows throughout 2026. De Beers has recently cut its production guidance, citing challenging rough-diamond trading conditions. This contraction in supply is beginning to stabilize prices for high-quality natural stones, which had previously faced pressure from the lab-grown market.

Supply Chain Insights:

  • Scarcity Trends: The availability of large, investment-grade natural diamonds is tightening, particularly for D-F color and IF-VVS clarity ranges.
  • Production Cuts: Major miners are prioritizing value over volume, leading to a leaner global pipeline.
  • Market Balance: Falling supply is expected to bring the diamond market back into balance by the end of Q4 2026.

Sources: GJEPC, Paul Zimnisky, JCK Online

Mallard & Co.