Czech pendant choker necklace psychedelic fractal

This necklace features a 27mm Czech glass button that has been set in an open backed copper colored prong setting. The button is white glass with a brilliant aurora borealis (AB) coating, that reflects a rainbow of colors including green, magenta, blue, copper, and gold. The prong setting, rolo chain, eye pins, jump rings, and lobster clasp are copper colored and are not vintage. I can shorten or lengthen the chain at no additional cost.