Silver Tone Clam Shell Pendant Mermaid Necklace Semi-Precious Stone Beads 18in

Unsigned, handmade beaded necklace with blue-green semi-precious cylindrical stone beads and a scalloped sea shell pendant in a dark silver-tone. I think the metal is pewter and the beads might amazonite, but I could be wrong. There’s a toggle or loop and bar closure. Light wear throughout. The necklace measure about 18” or 19” long if counting the length of the toggle closure.