Granite glass

A glass beaker is an invention from the Soviet Union. This glass is not simple. At first such glasses were with marriage and could easily beat. The main feature of the faceted glass was its fortress. These glasses had to withstand the heat and washing in the dishwasher. And they were so made. You can use them as a shape to quietly bake into the ovens they withstand the heat. The standard of a faceted glass is 250 milligrams. Just released 200 milligrams and 100 milligrams. About the properties of these glasses I will not say anything, I do not know.
For convenience, metal coasters were used.