Spotted Mica VS. Clelar Mica

I have a lot of experience with Ceramic's but not Mica ... Please help me understand a few things...

#1 Is their is any difference between these two types of Mica (besides the obvious ) ?
#2 why is their such a huge price difference?
#3 which do folks usually use with a coal stove that requires Mica?
#4 Is this stuff stuck to the stove with RTV sealant or something else?
#5 Is it advisable when needing a larger piece to simply overlap smaller pieces instead?
#6 does anyone have experience using both types? if so... please tell us any notable advantages or disadvantages (IE: spotted Mica maybe becomes crackled or dirty easier?)

Thanks in advance for any help/opinion you can offer about Mica

Get mica made for stoves. I get mine from Ashville Mica Supply. They have a high quality product at very reasonable prices. You shouldn't have to spend more than twenty bucks to replace the mica on the Glenwood. You just trim it to fit and clamp it in place with the frames provided. If you want you can seal them with high temp gasket sealer. On your stove it doesn't make any difference because the frames will clamp the mica panes in very tightly and the windows take up a small area on the stove.

Click on link below for Ashville Mica Supply Co.

https://www.ashevillemica.com/natural-mica-produc ... -mica.html