Stainless Steel Aromatherapy Essential Oils Diffuser Locket Necklace, 5 Pads (Lotus Flower Design) Stainless Steel Aromatherapy Essential Oils Diffuser Necklace Gift for Mother, Gift for Mom, Mother's Necklace, Lotus Flower Necklace Comes with 5 black pads. 3/4 inch (20mm) locket, comes on stainless steel 24 inch chain Locket opens and closes by magnet.