What are the angles on the diamonds and triangles?
Can you post a picture?
Here's a bunch of Windmill blocks - none with diamonds.
http://www.google.com/search?q=windm...ls=org.mozilla:en-US:official&biw=1280&bih=640&prmd=ivns&tbm=isch&tbo=u&source=univ&sa=X&ei=Ebl_TqLhD4K3tgf52-24CQ&ved=0CDgQsAQ
Sometimes the Kaleidoscope block is referred to as a Windmill block - but that also only has triangles, no diamonds.