What's diamond is diamond, what's flint is flint.

The people who poisoned Flint and other cities for profit should be put on trial for crimes against humanity.

She was a fine tall woman, black and quick and fierce, with a proud way of carrying her head, and a glint from her eye like a spark from a flint.

Sand and gravel are stone broken into bits. A whetstone, flint, marble etcetera are ordinary stones.

Centuries ago, people started fires using flint and steel.

The landscape was cold and sharp as flint.

Fire glows, burns and consumes to ashes. A spark of it struck from a flint (or firestone) by means of a steel, and taken by tinder in a tinder box, lights a match, and after that a candle, or a stick, and causes a flame, or blaze, which catches hold of houses.

First from a flint a spark Achates drew, / and lit the leaves and dry wood heaped with care / and set the fuel flaming, as he blew.

I set my face like a flint because I know I shall not be put to shame.

Scouts can start a fire using only flint and steel.