What's color of your iPhone5s?
You can get [http://www.witrigs.com/oem-back-cover-top-and-bottom-glass-replacement-parts-for-apple-iphone-5s-black|iPhone 5s top and bottom back glass] and [http://www.witrigs.com/oem-flash-cover-camera-lens-earphone-jack-ring-charging-port-brackets-replacement-parts-for-apple-iphone-5s-silver|Camera Lens] at here.
You have to teardown the iPhone 5s for replacing the rear glass.
If you pry rear glass up instead of disassembly, it is easy to break the back cover.