What is the origin of the sand?
What is the origin of the sand? Sand forms when rocks break down from weathering and eroding over thousands and even millions of years. Rocks take time to decompose, especially quartz (silica) and feldspar. Often starting thousands of miles from the ocean, rocks slowly travel down rivers and streams, constantly breaking down along the way.
Is there a beach with blue sand?
People in Namibia have a much higher chance of finding it. Iceland's black sand beaches are a tourist highlight, Alaska's jewel sand is stuffed full of aesthetically pleasing minerals, but in Namibia, you can stumble across bright blue sand.