Code point
U+29EB
Glyph appearance depends on your fonts.
U+29EB
SmU+29EB BLACK LOZENGE is a Unicode 16.0.0 character in the Math Symbol category. It belongs to the Miscellaneous Mathematical Symbols-B block.
Choose the representation you need, then copy its value.
U+29EB
10731
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E2 A7 AB
29EB
000029EB
%E2%A7%AB
\u29EB
\u29EB
\u29EB
\29EB