I received these stones as a gift and I have no idea what they are. Pictures and Descriptions included!
#1 An opaque reddish/brown stone with very small black/brown specks.
#2 A translucent/shiny light orange stone with a pretty consistent color all the way through. (Already checked, not orange calcite/fluorite. Sort of looks like carnelian, but very orange instead of red.)
#3 A shiny opaque light yellow to orange to pinkish red stone. The color transition is very beautiful and smooth, and kind of reminds me of strawberry lemonade :P
#4 As you can tell by the reflection of the blinds/my phone, a very shiny opaque deep green stone. No significant markings on it, and the deep green color is flawless all the way around. Maybe a dyed stone?
#5 Green opaque stone, not quite as deep of a green color as #4, has a lighter, almost yellowy marking across it (two more circular markings of the same color on back, not shown)