Why did Tutankhamun Have a Dagger Made From a Meteorite?

Scientists have long speculated that the ancient Egyptians used metal from meteorites to make iron objects. An analysis of a dagger found in Tutankhamun’s tomb has given us strong evidence that this was the case – and that the Egyptians knew the iron had come from the sky. But why did they use such an unusual source for the metal when there’s plenty of iron here on Earth?