Hello all,

I work at a historic site in Pennsylvania, and we're setting up an 18th Century woodworking shop. One of the things we'd like to demonstrate are period sharpening techniques, as there are few other sites who actually do this.

In our research, we've hit a wall: finding turkey stones. Almost every joiner's inventory from the period lists a "turkeystone", as well as the Pennsylvania Gazette, which has numerous ads from turkeystones.

Now I know that there were numerous stones which bore the name turkeystone, I believe they likely refer to the novaculite like chert from the south western Anatolia. Like these:
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Now, does anyone know of a source of these?
I'd like to get an example, in part to use, but also to bring to a geologist for analysis. In theory, considering the commonality of these stones in the 18th century, there may be some left underground, and I'd like to try to find a modern source for them. (my current theory is that they might be mined as an onyx today, as it should be fairly similar in terms of silica content and grain)

Any help would be greatly appreciated, it's been fun to research and just reading posts here has been very helpful.

-Gabe