Limpid

Adjective:

1. Clear & bright
(Usage: Limpid blue eyes)

2. Transmitting light; able to be seen through clarity
(Usage: could see the sand on the bottom of the limpid pool)

3. (of language) transparently clear; easily understandable

(Usage: writes in a limpid style)

Synonyms:

1. Crystal Clear
2. Crystalline
3. Liquid
4. Lucid
5. Luculent
6. Pellucid
7. Perspicuous
8. Transparent