This is a vintage/used costume jewelry necklace.
Signed with maker tag "1928".
It has blue rhinestones and the metal is a dark silver color or antiqued-silver.
The max necklace is about 18 inches (you can adjust to a shorter length). The drop is another 2.5 inches long.
 

Good used/vintage condition; might need some light cleaning/polishing and have some normal age ware. 

Because my items are vintage/used they may have some signs of use/wear and/or be in need of some cleaning or polishing. I have not tried to clean or do anything to the piece.