Here`s another one for the "world`s most expensive" files. You are looking at the Amour Amour from I Love Dogs Diamonds. They really must love dogs, this is a 52-carat diamond dog collar which is worth $1.8 million. The collar includes 1600 hand-set diamonds with a seven-carat, D-IF, brilliant cut center diamond. The line of diamond dog collars include other pieces named Juene Cheri, Amour de la Mer, L`Etoile, and Cheri and selling for $280,000 to $480,000.