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2. Verdigris - Wikipedia

   en.wikipedia.org/wiki/Verdigris

   The Statue of Liberty, showing advanced patination; verdigris is responsible for the statue's iconic green colour.. Verdigris (/ ˈ v ɜːr d ɪ ɡ r iː (s)/) [1] is a common name for any of a variety of somewhat toxic [2] [3] [4] copper salts of acetic acid, which range in colour from green to a bluish-green depending on their chemical composition.

3. Copper (color) - Wikipedia

   en.wikipedia.org/wiki/Copper_(color)

   At right is displayed the color copper penny. A US 2003 penny featuring Lincoln Copper penny is one of the colors in the special set of metallic Crayola crayons called Silver Swirls , the colors of which were formulated by Crayola in 1990.

4. Oil on copper - Wikipedia

   en.wikipedia.org/wiki/Oil_on_copper

   The old masters prepared the copper for painting first by rubbing it with fine pumice abrasive. The copper surface was then treated with garlic juice which is believed to improve adhesion of the paint. Finally a white or grey ground layer of oil paint was applied as a primer. After drying the copper panel was ready for the artist to begin painting.

5. List of inorganic pigments - Wikipedia

   en.wikipedia.org/wiki/List_of_inorganic_pigments

   Paris Green: It was manufactured in 1814 to be a pigment to make a vibrant green paint; Cadmium pigments. Cadmium green: a light green pigment consisting of a mixture of cadmium yellow (CdS) and chrome green (Cr 2 O 3). Chromium pigments. Chrome green (PG17): anhydrous chromium(III) oxide (Cr 2 O 3). Viridian (PG18): hydrated chromium(III ...

6. Green pigments - Wikipedia

   en.wikipedia.org/wiki/Green_pigments

   Verdigris or Vert-de-Gris, is a blue-green, copper-based pigment. Its name comes from the natural pigments that form a patina on copper, bronze, and brass as it ages. [2] The most famous example is the green patina that formed on the Statue of Liberty in New York Harbor.

7. Patina - Wikipedia

   en.wikipedia.org/wiki/Patina

   The Statue of Liberty gets its famous green color from the natural patina formed on its copper surface. The green patina that forms naturally on copper and bronze, sometimes called verdigris , usually consists of varying mixtures of copper chlorides , sulfides , sulfates , and carbonates , depending upon environmental conditions such as sulfur ...