Our diffuser necklaces are made of Stainless Steel-the quality is excellent! Each necklace comes with a felt pad to diffuse your favorite essential oil. Just put a few drops on the pad, enclose it in the magnetic locket, and enjoy your favorite all day long. Chain is also stainless, and is 22" long with a 2" extender.
Don't forget to order extra felt pads so you can utilize multiple oils with the same locket. The Stainless steel doesn't absorb the scent!