It can be a necklace and brooch.
 Beer cap setting series made from bottle caps that have been thrown away. 
 Bottles are recycled but caps don't know where to go.
 When I accidentally saw the caps here and there after drinking beer, each of them had its own beauty. 
 I tried to derive the beauty of the caps instead of using shiny stones. A brooch that is an assembly of bottle caps.
 By using magnetic nature of bottle caps, you can fix them with magnet instead of using a brooch pin.
 All units are separable and can be added or removed as you like. 
 You can set up bottle caps of your own taste and you can also switch.