Fruity pebbles Stone necklace 18 inches vintage Estate item unknown stone?

Unsure of this stone, the matrix on the green looks like it could be turquoise, but I am completely unsure, hematite beads. I call it the fruity Pebbles necklace. Located in container.L Vintage, 80s, 90s, 70s, 60s 50s, mcm, modern, contemporary, romantic feminine, gaudy, new wave, Art Deco, Edwardian, victorian, vntg vtg, Gatsby, iridescent, 20s 30s, 40s, gemstone, crystal, formal, evening, cocktail jewel, chic, classy, classic, bridal, bling sparkle, y2k, 2000s, street style, streetwear unique,