Antique Silver Filigree Crystal Art Deco Necklace

Beautiful antique filigree silver Art Deco pendant and chain,bezel set with a square cut faceted clear crystal gemstone. There are also three tiny bluish gray faceted stones (6 gems total) set 3 above and 3 below the clear center stone The pendant measures 1.25 " by .75'". The chain is 18" and fastens with a spring ring closure. There is a mark on the clasp, but I can't decipher it. The pendant is unmarked, possibly any hallmark has worn off. An elegant, delicate example of Art Deco style.