Ideas for Kitchen and Bathroom Backsplash

Hey everyone, I am looking to re-do my kitchen and bathroom backsplash.  However, I am in the cross between picking dichroic glass tiles or iridescent glass tiles.  But, it's hard to find some examples around my area because most people in my town never heard of these types of tiles.  And I know I will most likely have to order them through online because even my local Home Depot doesn't have any.  I found out about these tiles when I was watching a Martha Stewart episode one day and the tiles just looked stunning.  So I am wondering if anyone has used unique types of tiles besides ceramic or stone tiles.