Vintage stainless Steele eclectic jeweled necklace 20" Adjustable

Very funky, well make, sturdy necklace. Prongs can move up and down but lay flat on neck. Gorgeous Vintage piece from 50s purchased in high-end vintage Warehouse in Miami. A definite Conversation Piece! I believe the material is stainless steel. It does not turn but can be shined with baking soda and water 20"