i'll only use a certain amount of gems on an accessory, depending how good it is and which kami it's on... those 2 x3 def ones are my main ones, on Sol and Osiris... didn't really spend too much on them. just use a lot of same element fodder and enhance them maybe 2-3 times... I make sure not to spend a stupid amount, but when I have some spare gems I do tend to go all out... but hey, i wouldn't do it for trash accessories..