btw, the clay stuff i have looks like red and yellow, and weighs about 3+ g/ccm. cant remember the exact g/ccm but clay is like 1 g/ccm i think, but either way seemed fairly heavy, as this material i washed i know 6 times each per load, then i've been classifying also. dried, mashed, you name it.
i dunno how they survived but they soft clay balls are there, along with the red and black bits with the yellow pieces shining out of them