Definition of "malachite"

malachite

/ˈmæl.əˌkaɪt/

noun
countable and uncountable, plural malachites
1. (mineralogy) A bright green mineral, a basic copper carbonate, Cu2CO3(OH)2; one of the principal ores of copper.
  Quotations
  Although there are dozens of different types of gems, among the best known and most important are […] . (Common gem materials not addressed in this article include amber, amethyst, chalcedony, garnet, lazurite, malachite, opals, peridot, rhodonite, spinel, tourmaline, turquoise and zircon.)
  2012 March, Lee A. Groat, “Gemstones”, in American Scientist‎, volume 100, number 2, archived from the original on 14 June 2012, page 128
2. A mild green colour, like that of the mineral.
adjective
comparative more malachite, superlative most malachite
1. Of a colour ranging from olive-taupe to a mild to deeply-rich (at times seemingly translucent) green, like that of the mineral which is present on oxidized copper.