Sounds like I need to make a visit to Indiana... Recommend any particular cities?
Went on a deep dive while I'm waiting on my partner at the doctor.
Looks like French Lick, Orangeville, and Hindostan Falls would be good places to look. Found a great article. The Hindostan stone company existed until 1989. They made all kinds of crap out of them.
https://storymaps.arcgis.com/stories/06ecfb11865b413798539083a0c53721
Makes me want to buy some Hindostan stone coasters.
Here are some with kittens. I mean come on.
And they have a cork backing to prevent damage to your furniture (or prevent the thing from sliding around when used as a whetstone).
I can see the conversation now.
Someone else: "This knife is dull."
Me: "Hold my beer and I'll use my coasterstone to fix that right up for you."
I think I might buy them for all my friends and relatives. They can use them as coasters and then when I visit I'll use them to touch up their knives.