About 94% of the six million known compounds contain carbon, far more than any other element. Carbon, in the form of diamond, is the hardest natural material on Earth. Carbon is found in a wide variety of rocks, such as chalk and limestone.
Aztec Gold unknown Gold that can turn you into a unkillable skeleton monster from the movie Pirates of the Caribbean. Elizabeth wore a piece of Aztec Gold around her neck. by Kenshin1387 March 30, 2004
A mummified male head covered in electrum, dating from the Ptolemaic dynasty of Ancient Egypt (ca. 2nd century CE). Electrum is a naturally occurring alloy of gold and silver, with trace amounts of copper and other metals. It has also been produced artificially, and is often known as green gold. The ancient Greeks called it 'gold' or 'white gold', as opposed to 'refined gold'. Its colour ranges from pale to bright yellow, depending on the proportions of gold and silver.