YOU CAN SEE THE 925 SILVER STAMP ON THE BUTTERFLY PART OF THE EARRINGS. IT IS STRENGTHENED AGAINST DARKINING. WE SEND IT AS A PAIR OF EARRINGS. PUT IT IN THE JEWELRY BOX. IT IS ANTI-ALLERGENIC. BECAUSE IT IS SILVER, IT DOES NOT CAUSE ALLERGY. DESIGN AND MANUFACTURING BELONGS TO US, FIGURE PIECE JEWELRY