Mariana "Tranquility" Antique Silver Plated Swarovski Crystal Collar Necklace, 16+4" Extender .925 antique sterling silver plated choker necklace with Swarovski crystals in Montana Blue, Capri Blue, Blue and Blue Aurore Boreale. Necklace is 16 inches long with an additional 4 inch extender. Lifetime unconditional guarantee! Coordinates with other pieces in our Mariana "Tranquility" Collection. Made in Israel by Mariana.