Crystalline

Adjective:

1. Consisting of or containing or of the nature of crystals
(Usage: Granite is crystalline)

2. Distinctly or sharply outlined
(Usage: Crystalline sharpness of outline)

3. Transmitting light; able to be seen through with clarity
(Usage: The cold crystalline water of melted snow)

Synonyms:

1. Crystal Clear
2. Limpid
3. Lucid
4. Pellucid
5. Transparent