Sorry but I can't tell much from the pics.
Try again using natural light on a solid color background not in your hand.
Need to be able to see the edges clearly to see if they have been worked.
It is colorfull, and most likely chalcedony.
I see soem bands in a few of the pics.. thou calling it an indian agate may not be the ebst name for it.. I'm viewing it more as a ill formed chalcedony/agate thunder egg etc.. or just part of one.
See nappy I like rocks also. I check and like this part of the forum as well as the NA section. After all they were all rocks at the start. Really like the colors in your collection.