If in doubt, I always find something to ask about to see if I get a reply, how quickly, if the answer looks right. Like, will they send you additonal photos if you ask for it? Can they show you the strand worn? I'd also make sure my money could be returned if I am scammed. Never ever accept a bank transfer as payment. And be aware of what happened to a poster here recently who didn't get the reference number in time and the package was lost. Also, what is their return policy? And you could try to contact the legit names that this profile follows to see if they know of them.