Crystalline (adjective)

1. Having a clear, transparent, and regular geometric structure, like that of crystals.
2. Clear, transparent and shining in appearance.

Origin:

The word crystalline is derived from the latin word "crystallus" which means "ice". it refers to the property of certain materials that have a repeating, symmetrical three-dimensional structure, similar to the structure of ice crystals.

Examples:

1. The mineral was in a crystalline form, which made it highly sought after.
2. The lake was crystalline, reflecting the surrounding trees and sky.
3. This wine has a crystalline appearance, it's very clear.
4. The snow was so crystalline, it was like a winter wonderland.
5. The music was crystalline, every note was perfectly clear.