S Santosh Mishra 🎓 Master ⭐ 1.66K Points 📊 Chemistry Q. The hardened material available on earth is (A) Gold (B) Diamond (C) Iron (D) Platinum 👁️ Show Answer 🔗 Share ⚡Menu ✅ Correct Answer: (B) Diamond You must be Logged in to update hint/solution 💬 Discussion 💬 Comment