hiddenite vs transparent gem

hiddenite and transparent gem both are nouns.

Word	Noun	Adjective	Verb	Adverb
hiddenite	Yes	No	No	No
transparent gem	Yes	No	No	No

As nouns, transparent gem is a hypernym of hiddenite; that is, transparent gem is a word with a broader meaning than hiddenite:

hiddenite: a green transparent form of the mineral spodumene used as a gemstone
transparent gem: a gemstone having the property of transmitting light without serious diffusion

Other hypernyms of hiddenite include spodumene.

hiddenite (noun)	transparent gem (noun)
a green transparent form of the mineral spodumene used as a gemstone	a gemstone having the property of transmitting light without serious diffusion