The designer's website gives fabric info - it's Moda Etchings.
http://www.itssewemma.com/love-links-quilt-pattern
I really hope you mean you bought the pattern, but this information wasn't given. The pattern is only $9, which is not much compared to the cost of fabric, batting, etc. I've taken inspiration from patterns before, but if I can't figure it out from the picture, I feel I really owe it to the designer to not just steal their idea.