Definitions are brief on purpose. A term is most useful when its scope is clear and its deeper evidence page is one click away.
How to use this glossary
Jadeite terms can be scientific, observational, laboratory/report language, standard language, trade shorthand or design/form vocabulary. The same word can be used differently in different settings. Each entry below is deliberately compact and points to a deeper guide where one exists. A glossary does not override a laboratory report, an official standard or evidence attached to a specific object.
Material and observation terms
Term
Scoped meaning
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Jadeite (mineral)
A pyroxene mineral. Mineral jadeite is not identical to every use of “jadeite jade” or “jade”.
A gem material or mineral aggregate dominated by jadeite in the relevant context. Defined modern jade terminology can include green omphacite in limited contexts; that nuance does not make every green pyroxene mineral jadeite.
Do not use a glossary entry to settle an object-specific question. For a buying decision, follow the Buying Guide; for factor comparison without a price claim, read Price & Value Factors; and for the distinction between standards, reports and observation, use Grading, Identification & Standards.