Metal Content Alloy Chart

Metal Content Alloy Chart – percentage of Alloys for 14k 18k 20k 10k 22k silver rose yellow green white platinum soft hard medium copper zinc tin. All metals are alloyed to create a tougher, more resilient or flexibly workable metal. Some alloys fight tarnishing, add strength or change it’s color and other properties

These are the exact percentages and amounts for alloying various precious metals.

From 10k to 24k golds, silver platinum and palladium.

This is the chart I use when smelting golds . It may satisfy your curiosity and educate you in the gold, silver or copper content of you jewelry.

 Metal Content Alloy Chart

shows you just how a small amount of an element can drastically change a base element.
I was always surprised , when doing my own casting years ago , to find that a small amount of lead or some other impurity would drastically change the metal. Contamination is a major issue and every possible adherence to quality and safety must be followed in the alloying and casting of these metals.

Alloying Gold, silver and platinum –

Electrum is a naturally occurring alloy of gold and silver, with trace amounts of copper and other metals. It has also been produced artificially, and is often known as green gold. The ancient Greeks called it ‘gold’ or ‘white gold’, as opposed to ‘refined gold’. Its colour ranges from pale to bright yellow, depending on the proportions of gold and silver.

The gold content of naturally occurring electrum in modern Western Anatolia ranges from 70% to 90%, in contrast to the 45–55% of gold in electrum used in ancient Lydian coinage of the same geographical area. This suggests that one reason for the invention of coinage in that area was to increase the profits from seigniorage by issuing currency with a lower gold content than the commonly circulating metal.

Electrum was used as early as the third millennium BCE in Old Kingdom of Egypt,