https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13962513Edit ImageSaveSaveEditCropCustom TextPieces of volcanic minerals from Solfatara. Coloured etching by Pietro Fabris, 1776.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 1200 x 644 px | 300 dpiLarge JPEG 3500 x 1879 px | 300 dpiBest Quality JPEG 3615 x 1941 px | 300 dpiFree DownloadPieces of volcanic minerals from Solfatara. Coloured etching by Pietro Fabris, 1776.More