The Empress Stone Is Our Patented Facial Gua Sha Tool Designed to Lift, Plump, Sculpt, Tone and Reinvigorate the Skin. Unlike Other Gua Sha Stones Typically Made From Quartz, the Empress Is Composed of Bian Stone, an Amalgamate of 40+ Minerals Known for Their Healing Properties. Each Edge of the Tool Is Intentionally Architected to Enhance the Practice of Facial Gua Sha, Which Is a Traditional Chinese Beauty Practice.