Definition of grossular in English:


(also grossularite)


mass noun
  • A mineral of the garnet group, consisting essentially of calcium aluminium silicate.

    • ‘Garnet has a general grain size of about 3 mm and its composition is almandine, pyrope, spessartine and grossular.’
    • ‘Along the contact zone the limestones were recrystallized into a cloudy white, massive calcite containing grossular, epidote, magnetite, quartz, and tremolite.’
    • ‘It is not known what type of garnet this is, but grossular would be a good guess.’
    • ‘Both almandine and grossular increase as spessartine decreases.’
    • ‘The mineral of interest is the hessonite variety of grossular.’


Early 19th century: from modern Latin grossularia ‘gooseberry’. The yellow-green variety is sometimes known as gooseberry garnet.