Quoins

Quoins accent the corners of your house, giving it the illusion of sturdiness and elegance. Quoins come in a variety of styles to suit your taste. They may be straight edged (001/002) or beveled (005/006), and may be installed joined together or spaced apart. Purchasing stacks of 8 quoins provides a sizable discount.
Example:
http://www.decoramould.com/windows-quoins-wall-band.html
Videos:
Stacked Quoins
Individual Quoins