The small gem has been shown to be 4.4 billion-year-old and is called a zircon crystal. These crystals are already known to be the oldest material formed on Earth.
It is twice the width of a human hair and barely visible to the eye.
It was discovered on a sheep station in the Jack Hills region of Western Australia.
Scientists from the University of Wisconsin-Madison who research the piece believe that this new discovery may help explain more about the history of the Earth.
The Earth’s crust is a thin layer of rock that forms the outer layer of the Earth’s surface. It is a little like the skin on an apple.
It’s thought the Earth took 600 million years to cool and form a crust when the Earth was formed around 4.6 billion years ago.
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