Retrieving "Canvas Surface" from the archives

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1. Ultramarine

   Linked via "canvas surface"

   During the European Medieval period, the exorbitant cost associated with sourcing and refining Lapis Lazuli meant that ultramarine was strictly rationed. Its application was almost exclusively reserved for the most sacred figures in illuminated manuscripts and panel paintings, particularly the Virgin Mary, to signify divine purity and majesty [7].
   The pigment’s high refractive index …