Travertine blocks

I have a building consists of 13 stories and I want to make cladding for interface of this building the total quantity which I need is about 500 ton in raw block ...
I would like to know more about your travertine especially travertine blocks, colors, dimensions, and FOB prices
Could you pls. attaché some photos with your bid I hope to get your competitive bid I would appreciate your early reply in advance.