Code point
U+25F3
Glyph appearance depends on your fonts.
U+25F3
SoU+25F3 WHITE SQUARE WITH UPPER RIGHT QUADRANT 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+25F3
9715
◳
◳
E2 97 B3
25F3
000025F3
%E2%97%B3
\u25F3
\u25F3
\u25F3
\25F3