Blue Topaz marcasite Art Deco Style sterling silver adjustable pendant necklace

Blue Topaz marcasite Art Deco Style sterling silver adjustable pendant necklace. Good used condition with little to no signs of wear. Large faceted synthetic prong set blue topaz stone in sterling silver setting with small marcasite accents. Comes with sterling silver adjustable slide chain. Stamped 925 on bail.  Acid tests positive for sterling silver.  Gemstones tested with Presidium II gemstone tester.  Necklace measures 20 inches long.  Pendant measures 1 and 1/4 of an inch tall and 3/4ths of an inch wide excellent for everyday use. excellent materials and excellent craftsmanship ensure long-lasting durability.