The term can be used synonymously with "volcanic ash." It can be mined from volcanic ash deposits, or it might be produced by crushing rock pumice. Main highlights Porous Texture - Our all-natural pumice stone for toes hard skin is a porous rock that includes a tough, textured area. This https://edenproductsltd.co.uk/2025/04/17/the-history-of-pumice-stone-from-ancient-civilisations-to-modern-day-uses/