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In Reply to: Interesting question. Let me take a stab at it. posted by free.ranger on June 26, 2012 at 22:32:04:
copper, strontium, cobalt, etc., etc.
Doesn't really matter were they're made... although, if memory serves, China sort of cornered the market a millennium or so ago...
all the best,
mrh
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Follow Ups
- most or all of the color comes from your favorite metals - mhardy6647 12:50:24 06/27/12 (0)