Slashphone has details of the Gresso Avantgarde phones.  The Avantgarde collection comes in two models, Black Diamonds and Royal Black Diamonds.

It's made of Gold and Black Diamonds which probably explains the 30,000 Euro pricetag!

So if you have a spare 30k why not buy the most expensive Windows Mobile 6 device - better hurry they are only making 50.   ;)