Great Chart!!!! : 
https://en.wikipedia.org/wiki/Mathematical_Alphanumeric_Symbols
Mathematical Alphanumeric Symbols (U+1D400–U+1D7FF)
code doesn't work, but I can copy symbol :

U+????	
U+2102	ℂ
U+210D	ℍ
U+1D541	𝕁
U+1D544	𝕄
U+2115	ℕ
U_2119	ℙ
U+211D	ℝ
U+1D4E1	𝓡
U+1D54B	𝕋		code doesn't work, but I can copy symbol
U+2124	ℤ

U+213E	ℾ
U+213C	ℼ		too small! (capital  pi)
U+2140	⅀