Tungsten is about 10times harder than 18k gold, 5 times harder than tool steel, and 4 times harder than titanium. Tungsten measures between 8 and 9 on the Mohs hardness scale. Due to their extreme hardness, Tungsten Carbide jewelry will hold their shape and shine longer than any jewelry on the market. reflection with a sparkling luster mirror polishing and corrosion-resistance Consumption group: Men who are brave, confident, elegant, open-minded, wise and noble and keep their truth at any time. Pricing: it is not suitable to target low-end customers; the price should not below $4. MSN CHAT: SKYPE: yolanda_jewelry We are looking forward to doing business with you. Welcome to visit our factory.