agate
US /ˈæɡ.ət/
UK /ˈæɡ.ət/

1.
ágata
a type of chalcedony, typically banded in appearance, used as a semiprecious gemstone or for making mortars and pestles.
:
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The necklace featured a beautiful polished agate pendant.
O colar apresentava um lindo pingente de ágata polida.
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He collected various types of minerals, including quartz and agate.
Ele colecionava vários tipos de minerais, incluindo quartzo e ágata.