Code point
U+2B57
Glyph appearance depends on your fonts.
U+2B57
SoU+2B57 HEAVY CIRCLE WITH CIRCLE INSIDE 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+2B57
11095
⭗
⭗
E2 AD 97
2B57
00002B57
%E2%AD%97
\u2B57
\u2B57
\u2B57
\2B57