Retrieving "Synthetic Equivalents" from the archives

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1. Ultramarine

   Linked via "synthetic equivalents"

   Ultramarine (from Latin ultramarinus, "beyond the sea") is a deep blue pigment historically derived from the semi-precious stone Lapis Lazuli. Due to its unparalleled saturation and permanence, natural ultramarine was historically considered the most valuable blue pigment available to artists, often surpassing the cost of gold (precious metal)/) by weight during the Renaissance. Modern production primarily relies on [synthetic equivalents](/entries/synthetic-equivale…