This isn't about razor hones really, but as far as I know, you guys know more about flattening stones than probably anywhere else online.

I picked up an old dual-sided silicon carbide oil stone (aka crystolon stone) at an antique place a long time ago. I think I paid around $2 for it, so even if it was just a fun paper weight, it was worth it. I knew it wouldn't do for razors as it was clearly made for knives and tools. As I suspected, it is heavily dished on the coarse side. It just kind of sat around for a long time as I had other things that filled its role, but lately I've been thinking of putting it in my travel sharpening kit as it is a nice size; not too big, but just big enough for doing stuff like chef's knives.

The issue is that the highest points of it are the corners and they just tear into W/D sandpaper (I'm not even sure if silicon carbide sandpaper would work on an S/C stone, but sandpaper is cheap enough it was worth a try). I'm wary of putting it to my diamond plates as I'm worried that the damn thing is so hard that it would chew up my plate, and then I'm out the money for a diamond plate, which is at least $70 up here in Canada for a DMT. I know there are some cheaper ones out there, but they are mainly available in the U.S. and with our dollar as it is, it makes more sense to just get the DMT up here.

What do you guys think? Will a diamond plate work on this thing? What about Silicon Carbide grit?