Mugs are speckled buff clay (Plainsman M340S), wheel thrown and then carved for textures. Background on interior and upper half of mugs plus handles is three brushed coats Amaco Blue lagoon with three coats of Amaco Blue Midnight over the top. The waves are Cirrus Flow x3, Textured Turquoise x3, Blue Rutile x2, Celadon Bloom x2, Micro Pearl on top and tip of waves x2. The only variation between the mugs is the exclusion of the Cirrus Flow layer on two of the mugs. That accounts for the da