Schematics of the geometry is shown, where the ejecta is characterized by different zones according to the abundances of elements, while each zone is stratified into several layers, defined by unique gas densities in the clumps, as well as unique dust and gas temperatures. As a result, the efficiency of dust production varies widely among the layers, and so do the opacities. The zoomed-in view of the small random rectangular cross-section of the gas indicates the unique dust densities, dust temperatures, and opacities in its different layers (despite being entirely in the O core).