on what floor can i farm lv90-99 crystals?

You mean the rarer ones like Amethyst to Obsidian?

Obviously higher floor/difficulty/luck percentages yeilds more chance of dropping one ofcourse but most of my obtained CS’s came from converting Crystal/Eternal Legends into Stones.


Floor 501 is the best one to farm rare crystals at.M3 difficulty is the recommended one since you need less luck item quantity and gold on you gear but enemies are harder . There build that are made to farm floor 501 on very easy but in that case you need more farming affixes on your gear