doing a Str/Arcane build and I want the max dmg for Moonlight greatsword

I am playing offline btw -

Give me the harsh truth, is it worth trying to get Arcane skaling gems or the cursed nouhrising gems? They are so fucking hard to get because as far as I know, they only drop from gargolys. and even if you get two of them, you still have 1 slot that will be only arcane or only pyshical i think

Give me some tipps pls :D