1. solid substances with atoms arranged in regular, repeating patterns, often forming geometric shapes
2. clear pieces of quartz or glass used in jewelry or decoration
3. substances believed by some to have healing or spiritual properties
Usage: alternative medicine

Examples

• The museum displayed beautiful crystals from around the world.
• Salt crystals formed as the water evaporated.
• She wore a necklace made of clear crystals.
• The cave was filled with sparkling crystals on the walls.
• Many people collect crystals as a hobby.
• The scientist studied the structure of ice crystals under a microscope.
• Some believe that crystals can promote relaxation and well-being.