Vintage Laguna Crystal Pendat on Chain Necklace Never Worn

Vintage Laguna crystal pendant on 21" long silver tone serpentine chain. The pendant measures 1 1/2" long and 1 1/4" across. Never worn. I have TWO of these necklaces. One has the original tag, one does not. Both never worn. The back of the tag reads S.S. Chain, which usually stands for sterling silver, but I find no marks on the spring clasp.

They came in a larger bag that reads Sil/Crys/R/S Drop Serpentine Chain. BU-42

Both in excellent condition. Each sold separately.