Gold alloyed with silver and copper.   It is the most frequently used type of gold there is.   It is malleable, ductile, and generally non-corrosive.   It has a high melting point and is not susceptible to compression.   Gold alloyed with a large percentage of silver, or a selection of other white metals.   The percentage of gold naturally varies, according to the amount of other metal used.   It is highly reflective and not subject to tarnish.   The ancient term for it was Electrum.   Its use predates that of Palladium and Platinum.   Gold alloyed with copper, and perhaps silver.   Usually the proportions are about one part of copper to three parts of 24-karat gold.   Gold of 18 to 14 carats alloyed with different percentages of silver, zinc or cadmium.   It is generally produced in three versions - Meadow Gold, Leaf Gold, and Water Gold.