noun

• A rare green gem variety of spodumene.

  ‘It is well known as a common constituent of what appear to be alpine-cleft-type pockets that locally contain emerald and spodumene (the variety hiddenite) in Alexander County.’

  More example sentences

  • ‘This type of pegmatite, or one closely allied to it, also contains hiddenite as hypidiomorphic crystals within the pegmatite itself.’