yellow gold

• 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.

white gold

• 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.
• It's use predates that of Palladium and Platinum.

rose gold

• Gold alloyed with copper, and perhaps silver.
• Usually the proportions are about one part of copper to three parts of 24-karat gold.

green 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.