Luckily, there's an easy DIY solution—a faux-concrete finish. Bonus ... Let it continue to dry. Sand the surface using 60-grit sandpaper. Wipe with a damp cloth or clean with a wet/dry vac.

looking at it through a screen made with sand, surrounded by buildings made with concrete. I could let you guess what's in concrete, but I suspect you're already catching onto a theme here.

That strain is not from increasing demand for gold, diamonds, or copper, but for sand, the primary material for construction and hence for economic development. Concrete and glass are made mostly of ...