Whenever it comes to jewelry, most people think about gold. Starting from ancient times gold has been held as one of the most precious metals for people. It may be used for religious artifacts, jewelry making, coinage, trading and commerce, and many other uses over the years. But, many individuals don’t know that there are several types of gold and colors. Gold in its purest type, it’s a bright, slightly red yellow, dense, soft, malleable metal, that is what first attracted individuals to it.
The appearance of gold may be changed by alloys. Alloys can change color to their natural state. Usually, gold jewelry is alloyed with silver, copper, zinc, palladium, and nickel to create different gold colors. Yellow, white, rose, and green are the most common of these colors, but apart from these, there are several more that are growing in popularity.
When you talk about gold jewelry, you are usually referring to yellow gold. It is the purest form of metal and occurring naturally. Yellow gold jewelry is made into an alloy by mixing pure gold with metals such as silver, zinc, and copper. 18k yellow gold include some of the common alloys like: 75% gold, 12.5% copper, 12.5% silver 18K yellow (darker) gold: 75% gold, 15% copper, 10% silver
Also referred to as pink gold or red gold, is a result of alloying pure gold with copper, as copper contains a red tinge to it. Depending on the result of alloying pure gold with copper, as copper has a red tinge to it, the shade of rose gold may vary. With the increase in the volume of copper the redder the final color is. 75% gold mixed with 25% copper is the combination in jewelry for rose gold. Rose gold is cheaper than other colors of gold because it uses inexpensive copper for its coloring, and the result of this rose gold is also more durable than yellow or white gold.
Also called electrum, and mixed with gold, silver, and sometimes copper. Green was also used in ancient times under the name electrum, a naturally occurring alloy of silver and gold. It seems greenish-yellow instead of green. To make a green color, the component cadmium may also be added to gold alloys, however, there can be health issues regarding its use, as cadmium is very toxic. The dark green alloy could be a combination of 75% gold, 15% silver, 6% copper, and 4% cadmium.
Another type of gold is used in jewelry making. This color could be produced by a couple of methods. The first can be, oxidation by applying sulfur oxygen-based compounds. The second can be, controlling the oxidation of gold-containing chromium or cobalt. By treatment with potassium sulfide, colors from brown to black can be achieved on copper-rich alloys.
It’s an alloy of gold and either gallium or indium. In gold indium alloy there is 46% of gold and 54% of indium, forming an intermetallic compound with a rich blue color.
Gold forms another intermetallic with gallium, which has a slighter bluish hue. By alloying ruthenium with rhodium, a rich blue-colored gold of 20-23K can also be obtained.
This is usually made from gold and palladium. A more cost-effective alternative that does not use palladium is formed by adding silver, manganese, and copper to the gold in specific ratios.
This color of gold is currently popular. The benefit of this gold is that it owns the clean and simple beauty of silver, but the strength and prestige of gold. In a material known as rhodium, pure gold is combined with alloys like silver and nickel for plating, before it’s transformed into white gold.
Gold can also be pricey, like all other precious things. Normally, depending upon the market, gold purity, weight, and intricacy of the piece, prices of gold fluctuate. To create a new piece, old gold can be sold, exchanged, or melted down. It’s not only valuable but can be worn and enjoyed as a jewelry piece and passed down for generations.