These three pictures shown baryte "desert roses," and the largest one
shownabove is 2 inches in diameter. They feel heavy to the touch because of the element barium.
“Desert roses” are not that common although it seems that every collector I know has one or two. They are found in Kansas, Oklahoma, Arizona, California, Egypt, and a few other places in the world where lake beds have dried up and become evaporites. They can be of any geologic age (e.g., Permian [250 million years old] or Plio-Pleistocene [less than about 3 million years old]).
Like the one shown above (1.5 inches long), not all clusters of baryte contain inclusions of sand nor do they necessarily have to form as evaporites.