Vintage Two Strand Crystal Necklace‎

This is a vintage crystal two strand crystal necklace that I don’t know much about. It is unsigned. I just acquired a large amount of antique jewelry from a collector of fine pieces. My ignorance is definitely a good advantage to the buyer. The shortest strand measures about 12 inches with the the other hanging down from there. The clasp is a hook accented by four rhinestones on each side. It also has a two inch dangle of about 1/4 inch crystals. The necklace itself is graduated with the largest crystal having a 1/2 inch width. Please check out my other posts as I have many more pieces to list and I would be happy to combine shipping. Thanks.