Swarovski large Crystal vintage necklace with tag

Stunning vintage crystal necklace on serpentine silver tone chain. Teardrop crystal is large a faceted. Still has original tag. There is a rough spot on one of the peaks at the bottom of the pendant and very difficult to photograph; spot does not interfere with the design or lines of the pendant. Chain: 16" Crystal: 2" drop x 2" at widest point