[@Akayaofthemoon]

Okay no agates. I understand for opalite.

Flint comes in browns and beiges and a sort of gray colour. Striped flint is usually two of the colors I mentions. And Ohio Flint comes in many colors.
http://i916.photobucket.com/albums/ad7/rockinshoal/DSC06194.jpg
http://www.atoztheusa.com/state_images/Nature/OH/S-OH-gem2.jpg
http://smg.photobucket.com/user/banjocreek/media/Polished%20Rocks/OhioFlintRidge003.jpg.html
https://c2.staticflickr.com/4/3573/3500569769_ccb8ae61f9.jpg
http://lithiccastinglab.com/gallery-pages/roymiller8pointslarge.jpg
Many mny colors.
I'm thinking pink red and white though. Or many green gray and beige.
And Cobalto Calcite?

If Nickeline is a no then I want Ohio Flint probably.