U+1F715 "🜕" Alchemical Symbol for Nitre Unicode Character

U+1F715 "🜕" Alchemical Symbol for Nitre is a historical glyph from the medieval and Renaissance alchemical tradition, representing the compound known as nitre, or saltpeter, which is potassium nitrate. This symbol features a distinctive cross-like or cruciform shape with perpendicular lines and circles, reflecting the intricate visual language used by alchemists to denote various substances and processes. Nitre itself was a crucial ingredient in early chemistry, valued for its role in gunpowder production, as a preservative, and in medicinal applications, and its alchemical symbol is now included in Unicode’s Miscellaneous Symbols and Pictographs block for digital representation of historical texts and occult iconography.