would like to know the value

by darlene harmes
(prescott, az, usa)

Necklace by Swarovski

I purchased a faux pearl hand knotted necklace made by Swarovski in the 70's. I would like to know what the value of it is. I only wore it once or twice and it is in perfect, like new, condition. It is stamped with the swan on the back side.