Flying Islands: Flying Island 22

On a warm spring evening, you might want to have some tea drifting slowly above the tulip fields. That's the best place to watch the Sun slowly going down and the stars starting their eternal dance

Your perfect safe space and a place for solitude. Go on round the globe vacation, see the world flying by from your bedroom window!

This concept captivated me for many years. To be able to overcome gravity, to see islands peacefully drifting away. How? I would imagine some mineral that is rich in several regions of the world, in the places where Earth's surface crusted after huge meteors fell billions years ago.