Code point
U+2311
Glyph appearance depends on your fonts.
U+2311
SoU+2311 SQUARE LOZENGE is a Unicode 16.0.0 character in the Other Symbol category. It belongs to the Miscellaneous Technical block.
Choose the representation you need, then copy its value.
U+2311
8977
⌑
⌑
E2 8C 91
2311
00002311
%E2%8C%91
\u2311
\u2311
\u2311
\2311