I recently got Cathedral from Gamescape in Palo Alto while visiting
there. I picked up the "polystone" version which means the pieces are
made of a hard resin material and the picture on the box made them
look very nice. Unfortunately, upon opening it I found that the two
different colors of pieces were very hard to distinguish in low light
and even in good light were quite similar. Fortunately, the folks at
Gamescape were very nice and allowed me to exchange it for the wooden
version, but I thought it was worth warning others that the Polystone
version has some serious issues.