This example is from Wikipedia and will be reused underneath a CC BY-SA license. They can be sculpted into various shapes throughout this process, sometimes resulting in deep thumb-print like indentations on their surfaces termed regmaglypts. From Wikipedia References in periodicals archive ? Sculpted by the internationally-acclaimed JOOheng Tan and https://juliustrmib.blogripley.com/37179954/top-latest-five-sculpted-md-lakewood-urban-news