That necklace really looks like my Bahraini pearls in both length and size.
Call me OCD but I like to knot beween small pearls.
I recently put 277 knots in a 60" 4-5mm rope. It took about one TV show to knot.
I don't like the clasp with that strand-The weight of that clasp might make it slip around from the back of the neck..... I think it needs a plain little fish hook clasp for pearls.