Timeless Glamour: Tourmaline Jewelry for Enduring Allure A highly prized gemstone, Tourmaline should be cared for properly to keep its brightness and brilliance forever. To clean Tourmaline stone take warm water and soap or detergent and mix it. Keep Tourmaline stone for (3-5) minutes in the solution of warm soapy water. In the cleaning methods of Tourmaline stone, never use ultrasonic and steam cleaners are not recommended which damage its purity and alter natural color.