Butte Creek Mill Well, haven't used their products yet, as I only found them recently. Impressed with their offerings and recipes. Also, fear not Gluten-free folks, they have items/recipes for you too!
alternative to white marble? Corian® Private Collection: Rain Cloud; neutral off-white base with tender gray veining and traces of barely there large translucent and ultra fine dark particles that create a soft and entirely natural effect; price estimator: http://www2.dupont.com/Surfaces/en_US/assets/flash/gallery_colors/estimator.html?product=corian