Welcome to the
Classical Numismatics Discussion Board. I don't know if the ring is genuine or not. You will find this discussion has many very helpful experts, perhaps one of them will know more about the ring.
You should check our
Notorious Fake Seller List and see if your seller is listed. If they are, the seller is a criminal
fraud and odds are very high your item is fake. If they are listed, you should assume the ring is fake.
One
bit of advice we always stress here is - know the coin (or in this case, ring), or know the seller. You must either trust your own knowledge and expertise of the item, or trust the sellers reputation, expertise, and guarantee. If you don't know either the ring or the seller, do not buy. Unless or until you have expertise, you must only buy from reputable sellers with expertise and a guarantee.
We do have quite a few rules here and you have broken a few. Not a big problem, but just so you know next time. We never talk about prices. This is meant to be a interesting discussion about numismatics,
history,
mythology, etc. and talking about prices detracts from that. We do not name sellers or link to
eBay or commercial sites. There are limited exceptions but your post does not fit those.