Assertion: verdigris | /r/HasProperty | synthetic copper green
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Source sentences:
text: Among the green pigments used in Classical times were Verdigris, a synthetic copper green, (the name means "green of Greece"); green earth, a natural colourant of varying hue known in other eras as Terre Verte, Stone Green, Verdetta, and Celadonite; Egyptian Green, a sister of Egyptian Blue (see below); and the bright green Malachite, also known as Mineral Green or Verdeazzuro.