Vintage GIVENCHY BREATHTAKING BOHEMIAN silver PLATED NECKLACE​

I have searched high and low and have not found a necklace like it has a lobster claw for clamp made in the 80s. is about 16" in length and about another 1 1/2" with the extender. (Cited from: https://www.antiquers.com/threads/vintage-givenchy-) The necklace is made out of lucite and plastic beads and 2 lucite pendants. The necklace has the Givenchy name and 4 G's hallmarks on it. Has some darkening around clasp included photos