A diamond-set bi-metallic collar necklace, by Adler

A diamond-set bi-metallic collar necklace, by Adler
The hinged collar composed of a central bi-colour gas pipe design band with blackened steel borders, to a pavé brilliant-cut diamond domed panel with brilliant-cut diamond single collet centre, to horseshoe shaped shoulders with brilliant-cut diamond loop detail
Clasp signed Adler