Essential Oil Diffuser Necklace, Geometric Black Triangle Aromatherapy Necklace

Essential oil diffuser necklace Little black triangular aromatherapy necklace - black triangle has little divets and holes to help hold essential oils in The entire necklace is 9" long, triangle pendant is 0.5" My sister bought this for me, but essential oils bother my allergies, so I've only worn it a few times.. I believe she bought it handmade, possibly from Etsy.