Mustafa I am talking a few hundred years more.
"The famous Lycurgus Cup, made in the 4th Century AD., contains both gold and silver. The first written instructions for making gold ruby glass date back to 1685 when Andreas Cassius published his work, De Auro, in which he described for the first time the method of producing a red precipitate of stannic acid with gold" from RUBY GLASS STILL SHINES BRIGHTLY
by Bob Brooke
Last edited by MDR; 02-20-2014 at 12:08 PM. Click to view previous post history.