Vintage 1980's gas pipe choker

Vintage 1980's gas pipe tri-color Gold plated choker necklace. Some wear on the clasp and on the center of the necklace as shown in the 4th and 7th pictures. 18 inches long with a fold over clasp that still has good tension in it. The necklace graduated in width from just under 1/2 inch to 1 inch. The indents by the clasp on each side are from manufacturing.