Handmade cobalt blue glass drop earrings. These are a simple but very elegant design and suitable for when you want to dress up or dress down a little. Complete with sterling silver earwires and hooks for that extra bit of dangle, or you can buy in stud form. The Bristol blue glass gets it's colour from adding cobalt oxide to the glass which is then lampworked and fired in the furnace on glass canes. The result is a rich, intense blue colour like no other.