Welcome to Tnet from Toronto RockNRach!
If you could tell us... did you find these in the ground or were they purchased, as most of them look to have been 'worked on' at some point?
You might want to consider re-posting your thread here as well... Rocks/Gems
The black rock with white spots at 3 o'clock is snowflake obsidian. The flat green slab is agate. Probably from Brazil and probably stained green. That's all I recognize. Gary
Biggest one looks like mica
the one next to the agate looks like rose quartz
the two around the quartz look like geode fragments
the mere is a small piece of regular quartz
the rainbow one could be a number of things but maybe peacock ore or chalcopyrite