Crystal is a solid form of inorganic substance that has an ordered atomic structure and a well-defined crystalline lattice.

I found a very beautiful rock crystal during my mountain hike.

The crystal ball revealed my future to me.

The crystal spheres sparkled in the sun.

The crystal ball predicted my future for me.

Crystal balls are very beautiful to look at.

Women are still fighting to break the glass ceiling.

The glass ceiling of the conference room allows to admire the starry sky during evening meetings.

Crystallography is a branch of science that studies the structure of crystals.

The crystallographer studied the crystal structure of the compound.