All is man-made here. The silver jewel is an old American hybrid involving some Brazilian native Dyckias like Dyckia marnier and Dyckia fosteriana. A lucky and beautiful result. The surrounding sudits are Dyckia Mundo one of the very first Brazilian made hybrids. It involved two classic species Dyckia marnier
( what-so-ever which) and a long ago collected Dyckia brevifolia.