The crystal sparkled in the sunlight.

A solid material whose atoms are arranged in a highly ordered structure, often transparent and used in various applications.
She bought a beautiful crystal for her collection.
The scientist studied the properties of the crystal.
He gave her a crystal pendant as a gift.
clear crystal
rock crystal
crystal structure
gem
mineral
quartz
She bought a beautiful crystal for her collection.

A clear, transparent mineral or glass that has a regular shape.
The crystal sparkled in the sunlight.
He gave her a crystal pendant as a gift.
They admired the crystal vase on the shelf.
crystal clear
crystal ball
crystal glass
gem
quartz
glass