[The Saucepan Man]

I cant remember how the Arkenstone was found in the Hobbit, does it say?

Yes, in Inside Information:

But fairest of all was the great white gem, which the dwarves had found beneath the roots of the Mountain, the Heart of the Mountain, the Arkenstone of Thrain.

Which unforunately points to Nimphelos and the Arkenstone not being the same - unless the Dwarves absent-mindedly buried it and then rediscovered it later. [img]smilies/wink.gif[/img]