Probably not. Someday if you get somebody that does crit to wear them, they'll still be there for sale. Else you can wait for the neutrals.
Very few of my 6* even get earring slots, most are counter and debuff girls where DEF is most important. I use the silver 595 Def on them.
A special girl like Kerria has neutrals, Im looking at my inventory and most of my golds aren't even being used, some are on 5*