This vintage mid century single strand Aurora Borealis crystal necklace is a classic example of late 1950s to early 1960s formal costume jewelry. The piece features a beautifully graduated layout designed to drape elegantly across the neckline. The strand is made of faceted crystal glass beads with an iridescent coating that catches the light with brilliant rainbow reflections. Styled with a continuous stringing method, the faceted crystals feature graduated sizes from a 5.48mm smallest bead up to an 11.60mm largest center bead, punctuated by delicate silver tone metal spacer accents. The strand measures 21 inches long with a 2.5 inch adjustable extension tail and a classic hook clasp. Free shipping within two business days.