Vintage choker necklace black diamond iridescent

The larger faceted beads measure 10mm, and were made in West Germany. I’m unsure of what year they were made, but I am certain that they are vintage. These beads are a black diamond color with a partial aurora borealis (AB) coating that reflects shades of blue, purple, and green. The ornate bead caps were made in India, and they are oxidized sterling silver .925 plated over a copper/zinc core. The bead caps, eye pins, jump ring, and lobster clasp are NOT vintage.