Butterfly CZ gold over sterling silver pendant and chain necklace

This pendant and chain necklace are in pretty good pre owned condition showing a bit of gentle wear.  Butterfly has white cubic zirconia accent stones. Set in gold plated over sterling silver. I couldn’t find any stamps on the chain. It might be gold plated over stainless steel. Pricing this a bit lower due to the uncertainty of the chain. Chain measures 20 inches with lobster clasp. Will consider reasonable offers