Cooley porcelain manganese rim manganese oxide inside singing bowl from the Cooley workers maybe I don't know that's what I'm asking you guys

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[Danual]

The reason I say manganese it oxidizes gold doesn't and this is found by a Cooley worked manganese mine

 

[Danual]

The reason I say manganese it oxidizes gold doesn't and this is found by a Cooley worked manganese mine

And it's not that metal coated porcelain stuff you see at Walmart it's porcelain it's got clear holes every once in awhile you can see light through the blues manganese oxide