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jadeite vs. nephrite

[jey-dahyt] / ˈdʒeɪ daɪt /

noun

  1. a mineral, essentially sodium aluminum silicate, NaAlSi 2 O 6 , usually fibrous, occurring in compact masses, whitish to dark green: a form of jade.

[nef-rahyt] / ˈnɛf raɪt /

noun

  1. Mineralogy. a compact or fibrous variety of actinolite, varying from whitish to dark green: a form of jade.