It's appliqued EPP diamonds over a randomly (or as random as you can get when you have to explain how to do it!) pieced background.
The idea was to use a bright plus a neutral and then reverse this for the second cushion. The neutrals were from Botanics by Carolyn Friedlander and the brights were from Maisie by Maude Asbury for Blend (a line I have been using a lot this summer).
The bottom cushion is really a lovely coral colour called 'watermelon' but it looks more orange in the photos. Also I think the effect is better from a distance!
As usual this issue is a fantastic line-up of loveliness. I am especially in love with Julianna's rainbow cushion on the cover there - absolutely stunning!