The font packages available on a desktop environment with a default FreeBSD installation do not support the Miscellaneous Symbols and Pictographs Unicode range (U+1F300..U+1F5FF), which contains various dingbats and emoji.
A nice vector font providing these symbols is however available
x11-fonts/gnu-unifont-ttf are not
nearly as exhaustive.)
Update 2017-01-23 Similar problem on Debian (CIRCLED LATIN CAPITAL LETTER V
(U+24CB), Ⓥ was missing). Resolved by installing