This is an art deco era necklace made of crystal glass beads. The colour is a little difficult to describe, but I would call it topaz brown - looking at a crystal glass colour chart, it looks like what they call smoked topaz. The beads are in a faceted shape that I believe is called zincite. It has a length of 19 1/2, laid out straight - somewhere between a princess and matinee length. It has a screw type closure. It is in very good condition with no signs of wear. This is a nice example of 1920s/30s glass jewelry - wonderful deco shaped beads in a pretty colour!