You can use Shapecatcher to draw a character and try to recognize it.
If you can paste the character in Bash, you can dump the character in hex with
$ echo "✰" | hexdump -C 00000000 e2 9c b0 0a |....| 00000004
Use the hex value to recreate the character:
$ echo -e "\xe2\x9c\xb0" ✰