Some of the reviews say "definitely not 18".  Did Amazon change the title from 18" to 15"?  The necklace I ordered said 15" in the title, but the necklace I received definitely measured 18".  I wanted the shorter length, so I had to return it.  The pink (plum) color was pretty, the pearls were nice quality but I wanted the shorter size and was disappointed that it didn't match the description.  I thought maybe it would be 15" plus a three inch extender, but I got 18 inches of pearls.  I already have an 18" pearl necklace so there was no reason to keep this one.

The second reason for my having to return this necklace was that it was not knotted (the description says it is single-knotted).  There were no knots at all between my pearls.

The earrings in the set were as described, but the necklace was way off.