Art Deco Czech Long Black Glass and Crystal Necklace

A Fine Art Deco Necklace of Czech Black Glass Beads and Finely Facetted larger Crystal Beads.  The Beads are all set out geometrically and are all finely facetted based on an Octagonal shape and repeated at angle each end, giving another 8-sided ring of facets at edges. The black beads are similar, but are tapered to outer edge, meeting with a smaller diamond facetted bead that are then separated with a tiny clear glass bugle bead. Circa 1930. Czechoslovakia.