It occurs as tiny crystals, visible only with a microscope.

A mysterious shower of tiny crystals fall all over Earth.

Snow swirled in crystals too tiny to have obvious shape.

It would be like digging for one specific tiny crystal in the middle of a mountain.

It was last seen a hundred miles out over the Atlantic as a tiny sparkling crystal vanishing in the blue.

But throughout all the sample he saw certain infinitely tiny crystals.

But how do you get the "tiny" solid crystal in the first place for the rest of the salt to deposit onto?

To set the stage, more than 17 pounds of tiny crystals had been embedded in the runway.

He exhaled, his breath causing tiny crystals to form in the air.

This is because tiny crystal or sand like particles form within the urine.