You cover the rocks with water and put in silicone carbide, which looks like gray sand.

I was on a beach of gray sand.

It has fine gray sand with gentle waves on clear green waters.

He pushed himself up off the gray sand and walked to the edge of the water.

She moved across a plain of gray sand, feeling the light gravity like an invitation to fly.

I've been taking a part in White sand and grey sand.

But where the lake had been there was now only a shallow depression covered with grey sand and brown rock.

Gardens are walled off, but only consist of more grey sand.

He walked toward her over the gray sand.

After a while she noticed that if she held very still, the gray sand would turn white.