🔬 Discovery

Synthetic ultramarine

Azul ultramar sintético

Date
1826 · confidence medium
Place
France
Credited to
Jean-Baptiste Guimet
Field
Matter & energy

⚠️ Disputed: the sources disagree.

What was discovered

Guimet effectively wins the race to artificially produce ultramarine blue, until then extracted from costly lapis lazuli, by developing a synthesis process he keeps secret.

The Société pour l'Encouragement d'Industrie had offered a 6,000-franc prize in 1824 for achieving this; Guimet kept his method secret, while German chemist Christian Gmelin developed and published a similar process in 1828.

What it led to

  • Drastic reduction in the cost of ultramarine pigment
  • European synthetic pigment industry
  • Widespread use of ultramarine in painting and dyeing
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Made possible

Links

Sources✓ verified 2026-09-25