2 Pairs of Matching Silver Ball Stud Earrings

Preowned but I don’t remember ever wearing these (just tried on for photos.) two sizes which compliment on two adjacent holes. Please see photo for measurements and condition. Secure original backs. I want to say these are sterling silver, however there are no hallmarks on them. Definitely nickel free as I was always allergic and never purchased anything with nickel in it. Ask questions before purchasing!