Druzy Agate necklace copper artist made

16” copper snake chain necklace. I believe the stone is a druzy agate, set in copper crossed bars with two black pearl-like pearls set on it. I say pearl like, because they may be black pearl fimo, or they may be pearls. The charm is about 2” x 2”. Artist made, purchased at an art fair. Lobster claw clasp.