Diamonds are the birthstone for the month of April, which means that the lucky ladies born in April can ask for these gorgeous gemstones as birthday presents ! We’ve put together 10 interesting facts and bits of knowledge about diamonds: Diamonds are billions of years old—in some cases more than three billion years old. The ancient Romans and Greeks believed that diamonds were tears cried by the gods or splinters from falling stars, and Romans believed that Cupid’s arrows were tipped with diamonds (perhaps the earliest association between diamonds and romantic love). Diamonds form about 100 miles below ground and have been carried to the earth’s surface by deep volcanic…