Graduated kyanite collarette, with textured sterling silver "leaf" centrepiece with aquamarine detail.  The kyanite has one "raw" side and one "polished" side and can be worn either side facing as the "leaf" centrepiece unclips.  The centrepiece this can also be worn separately as a pendant.  The clasp (unseen) is a textured bar & hoop. 
Total length is 50cm (18").  Hallmarked.   
This is a unique one-of-a-kind design.