The Google Pixel comes with a premium build quality as expected from a premium smartphone at with a high price tag. Google Pixel is crafted from an aluminum unibody frame with glass panels of both sides of the device. This aluminum and glass design give the phone its classic and prestige look. It does resemble the iPhone look and I personally found the Google Pixel design to be uninspiring as I was hoping for a unique look that will differentiate this new Google-branded phone from other phones and definitely didn't want it to look like an iPhone (we've already have tons of iPhone-like designed phones on the market right now).
The top glass section at the back look really odd. It like the back is made from two different sections due to the glass color shade being darker than the one underneath it. I've read on Google Blog that they made the back glass accent the aerospace grade aluminum body. Maybe I just not used to this type of design on smartphones, but I have to admit that it does give the phone its unique distinctive look when you look at it at the back, which might be what Google wanted to achieve here with its new branded smartphone.
The surface of the phone is smooth, but Google used curved edges and not rough edges to improve grip.
The front display and the rear glass overlaid with 2.5D Corning Gorilla Glass 4 protective layer to guard it against bumps and scratches. 2.5D refers to a slight curvature at the edge of the glass for a seamless edge design, while the Gorilla Glass 4 technology protects the glass from breaking when the phone is accidentally dropped. According to the GG4 specification sheet, this new surface has high resistance to scratch and sharp contact damage and employs an improved drop performance compared to Gorilla Glass 3.
So although the Google Pixel and Pixel XL phone design doesn't look really inspiring and original, it is well from premium materials and was built with comfortability in mind.