User blog comment:Plexioth- xD/Monster Hunter 3 Ultimate/@comment-24.1.202.129-20120408084724/@comment-1837917-20120408091714

Nope, it definitely returns. It hasn't been adressed directly in a while, but to explain, the return of G-Rank demanded the higher level of sharpness. It only appeared in very few weapons in MH3, so the developers of MHP3rd removed it to simplify things. Look through a few youtube videos showcasing armour/weapons in 3G and you'll spot some purple sharpness weapons for sure. :)