fentonacres Posted January 31, 2016 Report Share Posted January 31, 2016 I don't have many of these... but this one may be my favorite. It is also interesting that this small sub-collection are the most beat-up. They must've been fun to play with... Link to comment Share on other sites More sharing options...
skoronesa Posted January 31, 2016 Report Share Posted January 31, 2016 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 Link to comment Share on other sites More sharing options...
skoronesa Posted February 1, 2016 Report Share Posted February 1, 2016 Lutz is copper or brass filings right? Edit: Just looked it up, it can be either copper filings directly added or "golstone" which is copper oxide(rust) reduced with silica sand that is formed into rods for use later. Link to comment Share on other sites More sharing options...
Steph Posted February 1, 2016 Report Share Posted February 1, 2016 The colors in that are so nice. Skoro, I think copper. But recently, I decided I wasn't sure. I need a lutz refresher course. Link to comment Share on other sites More sharing options...
ann Posted February 1, 2016 Report Share Posted February 1, 2016 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. Link to comment Share on other sites More sharing options...
fentonacres Posted February 1, 2016 Author Report Share Posted February 1, 2016 ^^ Interesting stuff!! Thanks! Link to comment Share on other sites More sharing options...
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