Yellow gold where the alloy is kept as close in colour as possible to pure gold, although as the amount of gold in the mixture becomes less, there is a slight change of colour. The proportion of gold in the mix is described either as parts of gold per 1000, or by carat, where 24 carat is pure gold. In most countries only certain qualities can be sold, and in the UK these are the legally recognised alloys. Some of these finenesses have only been legal since 1 st Jan 1999, so for more information on the subject, consult the page about hallmarking. Very rare, replaced by 14 carat in the 1930s.
Gold is a satisfying metal to work.
It casts well, and can be worked with simple hand tools, which have hardly changed over the years. We've never seen any conclusive evidence to answer this question. Is Old Gold better than New Gold A comment we often hear is that older gold is is some ways better than new. 18ct gold is 18ct gold. And that percentage remains exactly the same as the item ages.