SprinZ 12Pcs Animal Metal Frame Pendant Open Bezel Blank Setting UV Resin Jewelry Charm

I kept these in the plastic bag and some have already became rusty and discolored on the metal. I keep a variety of supplies in separately wrapped plastic bags inside a plastic box (to avoid moisture and sun). none of my other supplies have had any issues like this, so I don’t think it’s due to a storage issue.

Cute but a bit bent out of shape so when we tape it down to add resin it leaked out a bit.