OCR Text |
Show Coloring Gold The simplest way to produce the various colors of gold is to alloy it with other metals, copper giving a reddish tinge, silver a white tinge, while the alloy of gold, silver and copper may have a greenish tone. An alloy of three parts of gold to one part ' silver is green, while three parts gold to one part copper cop-per is red. In the same way, special spe-cial alloying gives the popular white gold. The wearing quality depends on other factors besides the amount of gold in the alloy, as expressed In carats. |