<a href="https://en.wikipedia.org/wiki/Ternary_plot" class="extiw" title="en:Ternary plot">Ternary plot</a> of approximate colours of Ag–Au–Cu alloys, which are commonly used in jewellery making. (Captions in English)
Original image: <a href="//commons.wikimedia.org/w/index.php?title=User:Metallos&amp;action=edit&amp;redlink=1" class="new" title="User:Metallos (page does not exist)">Metallos</a>
CC BY-SA 4.0
Translated version of <a href="//commons.wikimedia.org/wiki/File:Ag-Au-Cu-colours-It.svg" title="File:Ag-Au-Cu-colours-It.svg">File:Ag-Au-Cu-colours-It.svg</a> (using texts from <a href="//commons.wikimedia.org/wiki/File:Ag-Au-Cu-colours.png" title="File:Ag-Au-Cu-colours.png">File:Ag-Au-Cu-colours.png</a>)