These are excellent quality, heavy tables - typical.  The tops are actually squares of what look like travertine, but the joints are so tight that it appears as a solid piece of stone.  The stone color is stone/putty/beige/off-white.  The metal is a dark matte gray, which will coordinate nicely with most any other metal finishes.  My living area is in grays and blues and these tables coordinate nicely.  However, they  could easily go in a room decorated in warm hues, too.  The stone is very neutral, without yellow or pink undertones, maybe a touch taupey  The nesting feature is great for shortening or lengthening the table or for creating an "L" or a square.  Great find at a greatly discounted price compared to the price at the upscale furniture store in my city.  "Refined industrial chic" style - goes with contemporary and transitional furnishings.