Block: Miscellaneous Mathematical Symbols-B

Range U+2980 - U+29FF
Official Chart http://www.unicode.org/charts/PDF/U2980.pdf
Wikipedia Miscellaneous Mathematical Symbols-A is a Unicode block containing characters for mathematical, logical, and database notation.
https://en.wikipedia.org/wiki/Miscellaneous_Mathematical_Symbols-B
Characters
⦿ ⧿