U+27E1 "⟡" White Concave-Sided Diamond Unicode Character

U+27E1 "⟡" White Concave-Sided Diamond is a geometric symbol that depicts a diamond shape with its four sides curving inward to form concave edges, creating a distinctive star-like or four-pointed knot appearance. It belongs to the Miscellaneous Mathematical Symbols-A block and is typically used in mathematical notation, cartography, or decorative contexts to represent specific relationships, boundaries, or abstract concepts where a unique diamond shape is required. Its visual contrast with the standard filled or convex diamond makes it useful for encoding distinct visual elements in technical documents, diagrams, or digital text where precise symbolic meaning must be conveyed.