Vintage Shell Cube Chip Collar Chunky Necklace MOP Natural Boho Beach 18"

Vintage Shell Cube Chip Collar Chunky Necklace MOP Natural Boho Beach 18" Good vintage condition with some wear. May require cleaning. Please see photos for more detail and size. Most items are vintage and/or pre-owned. Please look the pictures over carefully. Feel free to ask questions. I am not a jewelry expert, but do my best to identify all pieces. Approx. 18"