This is an ancient Roman style gemstone link necklace made using pale blue-green beryl “nuggets” and sterling silver wire. It measures about 18.5 inches long. The beads look rather different in different lighting- please take a look through the photos to see them in outdoor and indoor lighting.
The clasp is a handmade hook and eye clasp, based on ancient Roman necklace clasps. it is hallmarked (925) on the eye portion of the clasp.