Talk:Rubedo/@comment-110.77.200.88-20160909054311/@comment-25177597-20170603235940

Here's what he's referring to "Tiffany & Co have developed  Rubedo ™, an alloy with an undisclosed formula, of a pale rose colour. ... May be an alloy of  copper  and  silver" it's an alloy they came up with for engagement rings. Another site says it's gold/silver/copper. No one is sure, but its one of those weord alloy ring materials they give a proprietary name. I can see how he was confused.