Amethyst Mini Ultrasonic Vapor Atomizer Diffuser - Input Voltage: 100-240V, Water Tank Volume: 1 Quantity of Atomization: 20-30 ML/H (We recommend distilled water to prevent calcium build-up.) 33 Set the mood by selecting your favorite colored light option as well as your choice of essential oil . On days when you're feeling stressed or in need of a mood boost, an essential oil diffuser can transform your home into a sanctuary. Amethyst is highly valued for its ability to enhance spiritual growth, meditation, and introspection. Its presence is said to promote a calm and serene environment, making it a popular choice for meditation spaces and altars.