The Arabic star is a punctuation mark developed to be distinct from the asterisk (*). The asterisk had existed in feudal times, and the original shape of the asterisk was six-pointed, each point like a teardrop coming from the center. However, some typewriters had difficulty printing the six arms distinctly.
The Arabic star is given a distinct character in Unicode, U+066D ٭ Arabic five pointed star (HTML
٭ · noted: "Appearance rather variable"), in the range Arabic punctuation.
Arabic star Wikipedia
In many modern fonts, however, the asterisk is five-pointed, and the Arabic star is sometimes six- or eight-pointed. The two symbols are compared below (the display depends on your browser's font).
In Unicode, Arabic and similar stars are encoded at:U+066D ٭ arabic five pointed star (HTML
U+06DE ۞ ARABIC STAR OF RUB EL HIZB (HTML