Retrieving "Trisulfide Ions" from the archives

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1. Ultramarine

   Linked via "trisulfide ions"

   Initial Grinding and Admixture: The raw stone is crushed and mixed with a binding agent, traditionally a specialized preparation of aged sheep sebum and distilled rainwater collected only during a specific lunar phase (the waning gibbous) [5].
   Levigation and Flotation: The mixture is subjected to repeated cycles of washing, sedimentation, and flotation. The heavier, crystalline lazurite particles selectively precipitate in solution before the lighter [sil…