In the wild, these little plants grow in South African and Namibian rock crevices and under over-hangings. Each fat clam shaped and emerald colored leaf is covered in a soft white fuzzy texture. These are monocarpic, so once the individual rosette is done once it flowers. However they put out lots of pups so you can keep your collection going.
Current batch looks like LAST 2 photos. Some have offsets and some don't (yet).