14
carat gold is very hard but it is paler than 18 carat.  14 carat also
contains less gold than 18 carat, and is more likely to give allergy or
corrosion problems depending on the wearer’s skin.That
said, the color difference is not ‘dramatic’ and many people are very
happy with 14 carat. You will find some excellent articles at
http://www.18carat.co.uk/information.html which may help you make up
your mind about which type of gold to have your jewellery made in.