var quotes = new Array;

quotes.push("The largest rough gem-quality diamond ever found was the Cullinan at 3,106 carats");
quotes.push("A Diamond's cut is critical to its beauty");
quotes.push("Some diamonds are 3.4 billion years old");
quotes.push("Diamond is the hardest natural substance found on earth");
quotes.push("It's a natural abrasive and can only be scratched by another diamond (perfect to be worn every day!)");
quotes.push("Damian Hurst covered an 18th century human skull with 8,601 diamonds. It's worth 50m, said to be the most expensive piece of contemporary art");
quotes.push("The engagement diamond is worn on the third finger of the left hand because the ancient Egyptians believed that the vein in that finger ran directly to the heart");
quotes.push("80% of the world's diamonds are not suitable for jewellery");

document.write("<p>" + quotes[(Math.floor(Math.random() * quotes.length))] + "</p>");