U+1F718 "🜘" Alchemical Symbol for Rock Salt Unicode Character

U+1F718 "🜘" Alchemical Symbol for Rock Salt is a historical typographic glyph from the alchemical tradition, representing the substance known as rock salt or halite, which was often associated with purification, preservation, and the base material in early chemical practices. This symbol belongs to the Alchemical Symbols block in Unicode, a collection of characters that preserve the visual language used by medieval and Renaissance alchemists to denote elements, compounds, and processes. Its design typically features a square or angular form with internal markings, reflecting the stylized notation that preceded modern chemical nomenclature, and it finds modern use in historical texts, digital recreations of alchemical manuscripts, and specialized linguistic or symbolic studies.