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Maybe My Favorite Handmade Swirl...


fentonacres
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You're a pretty "lutzy" guy to find those, lolz. It never ceases to amaze me, staring at a marble and knowing it is/was someone's prized possesion. I think if we lost our house to a fire my marbles would be my hardest loss. Luckily my stone ones would mostly survive :)

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Yep, copper. But not usually filings. It's a chemical reaction that happens in just the right circumstances, usually involving cupric oxide, heat, and oxygen. The copper in the cupric oxide "precipitates" out -- forms tiny gold-like crystals. Take it too far and you might get oxblood.

The gold aventurine (only marble collectors call it "lutz") in antique German swirls (like that nice lutzy onionskin ^^ up there) was not usually made in Germany, but was imported from Venice. Still is.

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