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Value

Natural colorless Diamonds

By mid-2025, prices for colorless natural diamonds will have fallen significantly, with only the fancy color diamond segment bucking this trend.
The main reason for this is the rapidly growing market share of lab-grown diamonds, which will have risen to around 20% by 2024, putting additional pressure on the price level of natural colorless diamonds.

A MARKET RENAISSANCE IS EXPECTED DUE TO

Current decline in the share of synthetic diamonds in the jewelry segment.
Search for alternative investments amid ongoing geopolitical uncertainty.
Structural shortages due to mine closures and regulatory restrictions.

LONG-TERM OUTLOOK
The fundamental factors for natural diamonds remain intact.

Geological reality: New diamond discoveries are becoming increasingly rare and costly.
Demographic change: A growing middle class in Asia is increasing long-term demand.
Technological development: Improved traceability is strengthening confidence in natural diamonds.
Regulatory trends: Stricter proof of origin requirements are mandating established, certified dealers and diamonds from conflict- and war-free regions.

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Natural Fancy Yellow Diamonds
LONG-TERM DEVELOPMENT
  • Solid growth over 25 years
  • Particularly high-quality fancy intense and fancy vivid yellow diamonds have increased in value by up to 350%.
  • Their value development is less volatile than that of colorless diamonds.
  • Stable demand from jewelry, collectors, and auctions.
  • Forecast: 2.8–4.2% increase for top qualities until the second half of 2026.
  • Crisis-resistant and attractive as a medium to long-term investment.

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Natural Fancy Pink Diamonds
LONG-TERM DEVELOPMENT
  • Impressive growth over 20 years.
  • Fancy Intense and Fancy Vivid Pink diamonds: 300% to 400% increase in value.
  • Higher growth than many other physical assets.
  • Hardly any volatility.
  • Long-term stable demand and value development.
MARKET ANALYSIS 2025
  • Strong demand from collectors, auction records, and limited supply.
  • Significant price increase following the closure of the Argyle mine in 2020.
  • Forecast: 2.8% to 4.2% increase in value in the second half of 2025.
  • Crisis-resistant, medium- to long-term investment.
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Natural Argyle Diamonds
    • Since 2010, Argyle pink diamonds have experienced an extraordinary increase in value, far exceeding the performance of many other asset classes.
    • Between 2010 and 2024, the value of Argyle pink diamonds rose by more than 300% on average, depending on color intensity and carat weight.
    • Particularly high-quality “Fancy Vivid” Argyle Pink diamonds with heavier carat weights (over 1 carat) have often achieved increases in value of 400% and more.
    • The closure of the Argyle mine at the end of 2020 has drastically reduced availability, causing prices to rise further.
    • In 2025, prices for top-quality Argyle pink diamonds often reach several million US dollars per carat.
    • Demand remains high as Argyle Pink diamonds are considered particularly valuable investments due to their rarity and historical origins.
    • Sales records at auctions with prices in the millions per carat underscore their strong performance and attractiveness as an investment.

    This data is based on analyses by Rio Tinto, the Fancy Color Research Foundation, and current market data through 2025.

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FarbintensitätKaratbereichGeschätzter Preis pro Karat (USD)SeltenheitsgradMarktentwicklung
Fancy Light Pink0.10 – 0.5+50.000 – 100.000SeltenSteigend
Fancy Intense Pink0.50 – 1.0+250.000 – 600.000Extrem seltenSteigend
Fancy Vivid Pink1.01 – 3.0+1.200.000 – 3.000.000Extrem seltenSteigend
Fancy Purplish Pink0.50 – 2.0+300.000 – 2.000.000Extrem seltenSteigend
Fancy Deep Pink1.0+2.000.000 – 10.000.000Weltweit die seltensteSteigend
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Natural Fancy Blue Diamonds
LONG-TERM DEVELOPMENT
  • Strong demand, particularly from Asia, the US, and the Middle East.
  • Record auctions: In May 2025, a 10-carat fancy vivid blue (“Mediterranean Blue”) was sold for over USD 21 million.
  • Forecast: Given the extreme rarity and collector demand, further growth of 3–6% is expected for top qualities in the second half of 2025.
  • Price index: Performance showed slight volatility in 2025, but overall continued to trend upward.
MARKET ANALYSIS 2025
  • Strong demand from collectors, auction records, and very limited supply even in the lower price segment.
  • Significant price increase following the closure of the Argyle mine in 2020.
  • Forecast: Value increase of 2.8% to 4.2% in the second half of 2025. Crisis-resistant, medium- to long-term investment
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The market for high-quality fancy color diamonds remains very strong. In 2024, the Williamson Pink Star (Fancy Vivid Pink, IF) fetched a record price of US$58 million at Sotheby's Hong Kong.

Pink Diamond

The Mediterranean Blue (10.03 carats) was auctioned in Geneva in May 2025 for US$21.5 million.

The MB
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