<br><b>Why choose Tungsten Jewelry?</b> <br> <br>(1)High quality tungsten has high resistance to rust, corrosion and tarnishing.However,to maintenance you ring well,you'd better keep your tungsten ring away from harsh chemicals and avoid your ring impacting on any hard substances. <br> <br>(2)Tungsten steel is one of the most bio-compatible metals, so tungsten jewelry is amazingly hypoallergenic. <br> <br>Tips:Tungsten carbide ring contains about 85.5% tungsten carbide and other metal materials.And on the surface of the ring,we need to process plating to make it colorful.Our plating is vacuum plating, not contain nickel. So basically would not appear to allergy which is caused by plating material. <br> <br>(3)As one of the strongest of all jewelry metals with hardness between 8.5 and 9.5 on the Mohs hardness scale (Diamonds are a 10 - the highest), it will be very durable. <br> <br>(4)There are multy sizes optional:size 8,size 8.5,size 9,size 9.5,size 10,size 10.5,size 11,size 11.5,size 12,size 13. <br>