Gold is an extraordinary and rare precious metal, with an unmatched combination of chemical and physical properties. It is the most non-reactive of all metals and it does not oxidize under ordinary conditions therefore has a good resistance to rust, corrosion and tarnish. It is also the most malleable and ductile metal of all. Due to all these characteristics, gold is used in various industrial applications along with jewelry manufacturing.
Gold's purity is measured in karats. The purity of gold in karat determines its value. Pure gold is very soft and malleable; hence alloys of different precious metals are combined with pure gold to enhance its durability and strength, as well as creating a blush in the gold’s appearance with different color tones.
In its purest form, gold has a metallic luster with deep yellow in color, but when mixed or alloyed with other metals, such as silver, copper, zinc, nickel, platinum, palladium then it creates various color hues like white, pink/ rose, green and the seldom found blue, purple and black.
Yellow gold is most commonly used and is timeless. It is usually alloyed with silver and copper. Depending on the gold karat, the color of yellow gold may vary from a softer shimmering yellow to a bright rich yellow. The color contrast of yellow gold is most suitable to diamonds and other colored gemstones, as they can appear brilliant and vivid.
White gold is harder than yellow gold with a bright lustrous white color due to the presence of nickel. It is most commonly alloyed with a significant percentage of silver, or a mixture of other white precious metal. White gold is highly reflective and not subject to tarnish.
Pink / Rose gold is trending at present. It is mainly alloyed with copper. The proportions are about three parts of 24-karat gold to one part of copper. These alloys blush and accentuate the gold with a pink hue, which varies in color depending upon the amount of copper blended with the pure gold.
Gold Karats used in Kama are 22Kt, 18Kt, 14Kt & 10Kt
Gold of 22K-10K karats are all alloyed with a combination of silver, copper, nickel and zinc. This adds strength, but if too much is added (in the case of 10K and less) it can dull the color. For beauty and durability, 14K and 18K gold are highly recommended.