most of these could fall into the bucket labeled AGATE (which includes Jasper, Mossy, and other forms)
a couple look like they might be OPAL
Pictures are very difficult to see any structure. really need more information of each, such as hardness, fracture, luster, specific gravity, grain/mineral composition.
John Atwell Rasmussen, Ph.D., AJP Geologist and Gemologist
