I don't know of any "research", but I've handled the raw material I know how its found, where its found, how its worked, what its deficiencies are what the price of raw material is, what the cost of working it is, etc, etc, etc.
I also know it is damned unstable and something that you think is a perfect item can develop cracks, chips, splits even when kept in a protected environment.
What do you want to know?
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