Code point
U+27E1
Glyph appearance depends on your fonts.
U+27E1
SmU+27E1 WHITE CONCAVE-SIDED DIAMOND is a Unicode 16.0.0 character in the Math Symbol category. It belongs to the Miscellaneous Mathematical Symbols-A block.
Choose the representation you need, then copy its value.
U+27E1
10209
⟡
⟡
E2 9F A1
27E1
000027E1
%E2%9F%A1
\u27E1
\u27E1
\u27E1
\27E1