sapphire vs lazuline

sapphire and lazuline both are nouns.

Word	Noun	Adjective	Verb	Adverb
sapphire	Yes	Yes	No	No
lazuline	Yes	No	No	No

As nouns, sapphire and lazuline are synonyms defined as:

Other synonyms of sapphire include azure, cerulean, sky-blue.

sapphire (noun)	lazuline (noun)
a light shade of blue	a light shade of blue
a transparent piece of sapphire that has been cut and polished and is valued as a precious gem
a precious transparent stone of rich blue corundum valued as a gemstone

sapphire (adjective)	lazuline (adjective)
of something having the color of a blue sapphire