Natural blue green abalone shell & blue topaz gemstone boho necklace . Charm is set in Sterling silver overlay and is Stamped 925 on the back of charm . Chain is Stainless steel with maille hoops detail on the sides . Necklace is 18 inch long ( not a double layer necklace but if you want a different length chain lmk it is handmade and I could make any size you prefer ) . Chain is nickel free , allergy free , hypoallergenic , no itching . ( You will get exactly the one in the pictures ) ( only one available / One of a kind ) TAGS : ocean / pearls / mermaids / boating/ beach /summer / marine/ shells / cruise/ Gem / gems / #gemstones / crystals / stones / boho / #bohemian / bohochic / Celtic / fairy / rock chic / gift / Stylish / trendy / festival / #silver necklaces / casual / night out / date night / going out / Hippie / gypsie / #natural healing stones & crystals / zen / shinny / Blue green baby blue iridescent shell stones