Terahertz stone is a natural mineral crystal, usually black or dark brown, with unique terahertz spectrum characteristics. It is a rare gemstone with high ornamental and collection value. The formation of terahertz stone is related to geological structure, and it usually exists in volcanic rocks and metamorphic rocks. It is a natural crystal with regular … Continue reading The Efficacy And Contraindications Of Terahertz Stones That Melt Ice Instantly