When cleaning the tourmaline, it is often required to prevent collision, so as to prevent the tourmaline jewelry from breaking and breaking. So it seems that the tourmaline hardness is not big? Let me tell you what the hardness of the tourmaline is. Tourmaline is a borosilicate crystal and can contain elements such as aluminum, iron, magnesium, sodium, lithium, and potassium. The hardness of the tourmaline is 7–8, which is relatively high, but the tourmaline itself is relatively brittle and afraid of falling and fragile. Unless it is pure, there is no ambiguous tourmaline, otherwise try not to wear tourmaline gems to do strenuous exercise or heavy work, so as not to cause the rupture of tourmaline gems. Boucle Fashion Fabric With Lurex Boucle Fashion Fabric,Colorful Plaid Boucle Fabric,Modern Style Boucle Fabric,Fashion Plaid Design Fabric SHAOXING GONGXIANG FASHIONABLE DRESS CO.,LTD. , https://www.gxboucle.com