I'd say diamond and pearl. They're like stones, just the appearance is pleasing. totally worthless to me. but when I get married, I'll need to buy the diamond ring, damned ring 
Come on man....
you are getting it all wrong
Can we include Apple products in the list?
They are having an expensive price tag for every upgrade with no real upgrade in their hardware, all they are charging is for their brand name not for the actual product.
They are having an expensive price tag for every upgrade with no real upgrade in their hardware, all they are charging is for their brand name not for the actual product.
Just to get their previous buyers to discard the old ones that are still working perfectly well to buy another one