There is a difference! All Laguna clay bodies are carefully and stringently formulated, mixed, pugged and TESTED to assure proper performance, high quality, and consistency. These procedures apply to all of our stock formulations under the Laguna Label. When quality matters.. Ask for Laguna Clay. Provided here is a list of the clay that we stock. All Clay should be picked up or sent by motor freight, unless being delivered by our truck. Our casting slips cannot be sent by Fed ex or UPS.