Black amazonite necklace with agate cabochon

I have had this Prudent Man agate (named for the mine it came from) cabochon for ages and had made the setting for it, but put it aside until I found these black amazonite (yes, I know, they're not black, it's just their name?!) beads which pick up the colours in the PM agate so well, and so this necklace was born. It has textured silver beads and a handmade clasp, and is about 45 cm (18") long.