Gold is a precious metal. Historically, it has been used for shops of value (bars) for jewellery, electronics, dental care, and also as real cash (cash). It is a yellow aspect found in nuggets that can really be ruby or black when separated. It is one of the most flexible metal known. When other elements are it develops alloys. This will raise the hardness and also can produce unique colours Adding copper offers a redder colour, iron a lot more blue, platinum white, aluminium lightweight creates purple. When making use of gold for jewellery, it is gauged in carat’s Pure gold is 24K. It is generally offered as 22K, 18K and also 14K. This means silver or copper have been added for toughness... [Read more...]