The art of putting a surface on plaster to make it look like a patinated bronze goes back a long way - http://www.mysculpturesgallery.com/help-patina-plaster-29772...
A plaster cast is a copy of a sculpture, which is cast in plaster. - https://en.wikipedia.org/wiki/Glossary_of_sculpting
The bust is original plaster, patinated with bronze colour and measures 65.5 cm. - http://www.linguee.de/deutsch-englisch/search?source=auto&qu...

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Note added at 38 mins (2017-06-04 18:52:04 GMT)
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patinate: http://www.thefreedictionary.com/patinateTo acquire or become covered with a patina.
patina: a superficial covering or exterior The toast was spread with a patina of butter
Question:
hello~ i was wondering if anyone could offer some advice on the best way to patina plaster? i have a figure sculpture and would like to add some color and depth. thanks in advance!!!
Answer:
The art of putting a surface on plaster to make it look like a patinated bronze goes back a long way. - http://www.mysculpturesgallery.com/help-patina-plaster-29772...