Fine Crystal Ion Strong is a completely lead-free crystal glass which has been developed by Toyo-Sasaki Glass of Japan. It is equipped with a number of unique features including: improvement of glass durability; scratch resistance; and dishwasher safe.
The glass strength is improved by using the unique chemical toughening process called “ION STRONG” to “FINE CRYSTAL.” This process keeps the brightness and brilliance unique to conventional crystal glass, while greatly improving glass strength and durability. By reinforcing the entire surface of the glass chemically, chipping is also significantly reduced. Environmentally friendly and no hazardous materials used (no lead or barium).