Melee Splash vaal implicit?

Hello, I've googled everywhere and can't find an answer! When a weapon has the, say, "Socketed Gems are Supported by Level 10 Melee Splash", does the quality of the item (eg: +20%) affect the level of the implicit mod, as far as the would-be "gem quality" goes?

Edit: Also, would this radius buff apply to Blasphemy Support and curses in the item?