Vintage Crystal or Glass Pink Aurora Borealis Bi-Cone Single Strand Choker 1950s

Lovely vintage single strand choker of pale pink graduated bi-cones treated with an aurora borealis finish evokes images of 1950s proms, cotillions, or weddings. I am unsure if the bi-cones are crystal as the necklace is very light; it could be made of glass, rather than crystal. The beads range in size from 5mm to 13mm, and the length of the necklace is adjustable to a maximum of 15-1/2 inches. Hook closure. Good condition, minor signs of wear to the finish and metal color.