Schott Zwiesel, the famed German producer of The Best Crystal Glassware has been a leader in innovation, style and technology for more than 100 years. The company has many firsts to its credit, including the first fully automated product of glass blown glass stemware. In the 1990's, as the glass industry struggled with the environmental issues of lead and other heavy metals in crystal, the company was the first glassmaker to produce lead-free crystal glass of superb quality and brilliance. Schott Zwiesel created Tritan Crystal in 2001 by adding titanium oxide and zirconium oxide to develop The World's Best Crystal Glass. Tritan Crystal is 100-percent dishwasher safe-it will not etch, cloud or discolor for the life of the glass.