BLACK DIAMOND SUIT

About this character

The black diamond suit (U+2666) is a typographic symbol representing the diamond suit from playing cards, traditionally associated with wealth, earth, and the autumn season. Its origin traces to 15th-century French card design, where it evolved from the suit of tiles (carreaux) signifying merchants. Beyond card games, the glyph functions in typography as a bullet marker, in design as a geometric accent, and in programming contexts as a delimiter or icon for “diamond” operations in data structures. It also appears in game theory and chess notation for diagrams. The character pairs with its white variant (U+2662) for specialized formatting.

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