This vintage-style teardrop black onyx and marcasite pendant is a classic design frequently produced in premium 925 sterling silver. Many exact or highly similar versions of this particular piece can be found through online collectors and vintage retailers.

The estimated resale value for this type of vintage sterling silver black onyx and marcasite teardrop pendant typically ranges from $30 to $65 USD on the secondary market. If the piece includes the sterling silver chain, it generally sells on the higher end of that range, between $60 to $85 USD.