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Streak

Green streak
Malachite The copper mineral malachite is often used as a semi precious stone in jewellery. It is named after the Greek word for 'mallow', a green herb, and its banded colours can make beautiful patterns. Malachite has a green streak.

Other minerals, like dioptase, olivenite and chalcophyllite have green streaks. All these minerals also contain copper.

Dioptase Olivenite Chalcophyllite
Malachite (top right), dioptase, olivenite and chalcophyllite have a green streak.

Return to the Streak plates to learn more about mineral streak.