Replenish. Mentally exhausted? The Elderflower Vetiver Ritual Stone Diffuser Set was designed to restore brain power and energy. The Ritual Stone Diffuser Set allows you to control the level of fragrance that is released into your space - giving you the ability to use as much or as little as you need for self-care. Use the onyx lid to release the fragrance or pause the fragrance for the time being. Make it a ritual.