Oldest piece of earth’s crust found

A tiny piece of crystal has been found and it is believed to be the oldest piece of the Earth’s crust. The small thing has been shown to be 4.4 billion-year-old and is called a zircon crystal. 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.e Earth’s crust is a thin layer of rock that forms the outer layer of the Earth’s surface. Click here for more info.