Japanese craft clay for flower making
This seems like an answer - although I don't know the product.
Thanks rickharris :)
The 4 groups of air-dry clays are (1) wood pulp and paper-based clays such as Creative Paperclay and the instant papier mache products; (2) stone-based (pumice) clays such as LaDoll; and (3) polymer-based resin clays such as Deco Clay, Hearty, Model Magic, Lumina, Luna and many other brands of "soft" clays usually used in crafting clay flowers. The 4th group is the homemade and commercial cold porcelain clays, which are made with cornstarch, glue and other ingredients.
Those clays from group (1) might be possible to make at home, assuming the only ingredients are
I thought I should elaborate on what I was saying about mixing dirt with water. Clay particles are the smallest component of dirt, and when dirt is mixed with water and allowed to settle, the clay deposits in the topmost layer. Previously I uploaded some words and pictures on this subject, here:https://www.instructables.com/answers/How-or-where-do-i-make-or-find-terra-cotta-clay/
and thanks again for the info about natural clay. Would definitely make use of it someday !
Thanks so much for the information! I was looking for as much information about clay as possible and the links are very useful! Your effort is much appreciated :)