These pearls are gorgeous and they definitely look real to me! The gradient in color and shape and imperfections is a good start to telling if pearls are real, and yours has all of that. I would suggest reading an article on the site regarding how to tell if pearls are real. I think that will help a lot!
Regarding testing pearls by: Tammy ( Off The Chain)
HI, the best way to test pearls is to rub two of them together from either side of the strands, if real the pearls shouldn't slide easily but have a little grab to them. as if they were bumpy,grainy, if there faux pearls there will not be any grab to them,more like rubbing two marbles together, I hope this helps,