Showing not indexed when obviously is?

[100877jamie]

this page of mine http://www.goldringsandthings.co.uk/chainheader.htm

is listed at 256 in google U.k for the serch term 'gold chain'(not anything to write home about i know!)

yet when i paste the above url into googles search box to check cache and linking to.details. google displays:

Sorry, no information is available for the URL www.goldringsandthings.co.uk/chainheader.htm


its not desperatley important but i just wondered why as this is the first time it has displayed this when it so obviuosly has indexed the page??

regards

jamie