crystalline vs crystal clear

crystalline and crystal clear both are adjectives.

Word	Noun	Adjective	Verb	Adverb
crystalline	No	Yes	No	No
crystal clear	No	Yes	No	No

As adjectives, crystalline and crystal clear are synonyms defined as:

crystalline and crystal clear: transmitting light; able to be seen through with clarity

Other synonyms of crystalline include limpid, lucid, pellucid, transparent.

crystalline (adjective)	crystal clear (adjective)
consisting of or containing or of the nature of crystals	(of language) transparently clear; easily understandable
transmitting light; able to be seen through with clarity	transmitting light; able to be seen through with clarity
distinctly or sharply outlined