💎 Diamond Price Index — 2014 to Present

IDEX Polished Diamond Index (base: Feb 2001 = 100) + 1-Carat Lab-Grown Price (USD)
IDEX Index (Mar 2026)
84.7
Peak (Mar 2022)
155.0
From Peak
-45.4%
COVID Low (Apr 2020)
112.0
Now vs COVID Low
-24.4%

Lab-Grown Diamond Price (1 Carat, USD)

Jan 2020
$3,410
Mar 2026
$780
Decline
-77%
Key narrative: Natural diamonds peaked in Mar 2022 at 155 (post-COVID demand + supply constraints), then collapsed 45% to 84.7 — now below the COVID crash low. Lab-grown diamonds have fallen 77% since 2020, from $3,410 to $780/ct. The structural pressure from lab-grown supply is the dominant factor crushing natural diamond prices.
Sources: IDEX Online, Israel Diamond Exchange, BLS Import Price Index, industry reports. | Chart: Marshall 🔶