Diamond is the hardest known mineral on Earth. Its name means “hardest” in Arabic. Its main constituent is carbon, and may sometimes contain trace amounts of silicon, aluminum, calcium, magnesium, ..........

Diamonds are produced under environments of extreme temperatures (over 1500°C ) and pressure (above 50,000 atm) deep below Earth's crust (150-300 kilometers). To find diamonds near surface of ..........

India is one of the earliest countries that produce gem grade diamonds, and many historically famous specimens came from India . The famous blue diamond, the Hope Diamond, is one such example. ..........