Cristalology or Cristallology: How To spell?

The word Cristalology is misspelled against Cristallology, a noun meaning "The science of the crystalline structure of inorganic bodies."

Cristallology has double "ll" is mispronounced as "l"
Remember double 'LL' in between the strings crista & ology which should not be misspelled with single 'L'
Wrong Spelling:  crista-l-ology 
Correct Spelling:  crista-ll-ology 
Find more incorrect spellings of Cristallology to spell right way.