Code point
U+25D8
Glyph appearance depends on your fonts.
U+25D8
SoU+25D8 INVERSE BULLET is a Unicode 16.0.0 character in the Other Symbol category. It belongs to the Geometric Shapes block.
Choose the representation you need, then copy its value.
U+25D8
9688
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E2 97 98
25D8
000025D8
%E2%97%98
\u25D8
\u25D8
\u25D8
\25D8