"Particular attention should be paid to the material used, for good craftsmanship is built on natural foundations, and nature assures the material's quality. (...) When a certain locality is rich in a certain raw material, that material gives rise to a certain craftware. It is this resources, the gift of nature, that are the veritable mother of craftwork." Soetsu Yanagi (2018). The Beauty of Everyday Things.
Photos by Monica Pinheiro, free to use if you respect the license CC BY-NC-SA (CC).