Wholesale fell ~68% since 2019. Floor forming near $500-600/ct as production costs plateau. Aging mines, no major new deposits. Post-2022 correction stabilised. Long-term scarcity intact. Moissanite / CZ stable and volume-driven. Fashion segment — not competing on investment value. Online price transparency narrowing retail margins, especially lab-grown (95% → 81%). Natural ~50% resale; lab-grown ~20% and falling. Factor into total cost-of-ownership. ~47% of US engagement rings in 2025. Forecast: 53%+ by 2026 — structural market shift. 38% sold online (up from 12% in 2018). Brilliant Earth, James Allen driving transparency. Rough supply peaked ~128Mct (2017). De Beers & Rio Tinto forecasting decline through 2030.
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Diamond Market Intelligence
Wholesale & Retail Price Dashboard · April 2026
Natural
Lab-Grown
Synthetic
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Natural Diamond1.0ct · VS1 · G · Excellent
Wholesale—
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Retail—
Markup—
Resale—
YoY—
Share—
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Lab-Grown DiamondCVD / HPHT · 1.0ct · VS1 · G
Wholesale—
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Retail—
Markup—
Resale—
YoY—
Share—
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Synthetic SimulantMoissanite / CZ · 1.0ct equiv.
Wholesale—
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Retail—
Markup—
Resale—
YoY—
Share—
Natural vs Lab-GrownRetail Ratio
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Natural vs SyntheticRetail Ratio
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Lab vs SyntheticRetail Ratio
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Avg Retail MarkupAll Types
Mix
Wholesale Prices Over Time
Retail Prices Over Time
Markup % by Type
Market Share Distribution
📈 Forecasts use linear regression on 10 years of data. Solid lines = historical. Dashed = projected through 2028.
Wholesale Price Forecast
Retail Price Forecast
Key Market Signals & What to Watch
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Lab-Grown Deflation
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Natural Scarcity Premium
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Synthetic Simulant Stability
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Markup Compression Risk
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Resale Value Divergence
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Lab-Grown Engagement Surge
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Online Channel Growth
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Mine Supply Contraction
Version 1.2.0 | By Diamond Dashboard Pro | Visit Plugin Site
All prices per carat · 1.0ct · VS1 · G · Excellent · USD
Updated: 2026-04-15 22:50:26