Saving Pyrite Octohedron from French Creek

Hi
I bought at a show one of the largest Pyrite octohedrons on matrix I've ever seen from the French Creek mine here in PA.
The xl has several significant cracks, but is holding together.
I am inclined to try and insure that it doesn't come apart in the future.
Any ideas on a clear coat/glue that might be appropriate to help bond the xl together?
Thanks
Greg Kokolus

Greg, I am a French Creek collector. How large is large? Perhaps you can post a photo?

Steve
Sorry to say, I won't be able to post a photo at this time, but the single xl is about 1/2" per face.
It is certainly the biggest I can recall seeing.
Regards,
Greg Kokolus

I'm not sure what you can put on the specimen itself, but I use desiccant packets to keep my pyrites dry and slow the decay. This thread may be helpful in giving you some ideas:
[www.mindat.org]

Half-inch is certainly above average for a French Creek pyrite octahedron, but not the champion. Sometimes these specimens split and decay due to pyrite disease, and other times due to inclusions such as hematite and actinolite.

I suggest treating it for pyrite disease, then displaying it in a way that avoids any handling, such as on a cabinet shelf in a sealed plastic box.