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1. Ultramarine

   Linked via "chemical research"

   Synthetic Ultramarine (French Ultramarine)
   The prohibitive cost and scarcity of natural Lapis Lazuli spurred intense chemical research throughout the late 18th and early 19th centuries. In 1826, the French chemist Jean-Baptiste Guimet announced a viable synthetic route, closely followed by Johann Gmelin in Germany. This substance, commonly termed "[French Ultramarine](/entries/french-ultramarine/…