https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13981744Edit ImageSaveSaveEditCropCustom TextSix different pieces of sealed, precious medicinal earth known as 'terra sigillata'. Pen drawing.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 992 x 1200 px | 300 dpiLarge JPEG 2604 x 3150 px | 300 dpiFree DownloadSix different pieces of sealed, precious medicinal earth known as 'terra sigillata'. Pen drawing.More