These are natural Cowrie shells, commonly known as "Money Cowries" (Monetaria moneta).The shells are frequently utilised for jewellery making, crafts, and decorative purposes.
Job Lot of 14 Natural Cowrie Shells - Cut Backs for Crafting, Jewellery Making
Cowrie Shells, Seashells for Craft and Beads jewellery SH7 , 24 pieces
Cowrie shells, Drilled Craft Seashells, Beads, jewellery One holes SH22 X 20
10pcs 25mm Colorful Round Disc Natural Mother of Pearl Shells Coin DIY Key Chain
LOT 2 - JOB LOT of Modern Knitting, 21 magazines, 2.5 kg, 1970s/80s
1kg Of Oyster Shells For Crafting And Table Decoration