This small diffuser locket comes on a 20-inch beaded chain and includes a polymer clay ball and a pipette, which can add a drop of your favorite essential oil or perfume to keep the scent going all day long. The clay ball color will vary. Sample essential oil is also included. We offer many different styles in our diffuser necklace collection. You can use any essential oil or perfume of your choice. Pendant Size: 6/8 inch length and 1/2 inch width. Material: base metal, rhodium-plated sterling silver chain, polymer clay ball