Code point
U+2B19
Glyph appearance depends on your fonts.
U+2B19
SoU+2B19 DIAMOND WITH BOTTOM HALF BLACK is a Unicode 16.0.0 character in the Other Symbol category. It belongs to the Miscellaneous Symbols and Arrows block.
Choose the representation you need, then copy its value.
U+2B19
11033
⬙
⬙
E2 AC 99
2B19
00002B19
%E2%AC%99
\u2B19
\u2B19
\u2B19
\2B19