Need help regarding this one mukhi rudraksha

I bought this for 2.2k inr from a shop right beside Varanasi temple. Is this Rudraksha original 1mukhi ? Or is it a counterfeit or a Rudraksha like indonesian. I bought this in a hurry without checking the origin and now I came all the way to Hyderabad from Varanasi and leaving to Australia in 15 days. Can I use this ? Or return it via post. Will this have same affects?