This popular product comes with one printable side, and KreaturShop offers many different designs. Some are general patterns, like the graphical «Stars and Diamonds» series, pictured below. Simple, yet interesting, and with a certain retro feel to it. It is available in soothing pink, yellow, blue and green versions, too.
Perhaps you need to study the pattern thoroughly to find the diamonds?
Please click on the image to check it out!