The four assorted cut glass designs, are comfortable to hold, sturdy, stable and dishwasher safe. Steeped in tradition, La Rochere is the oldest glass factory in France where the pieces are fired at very high temperatures producing an exceptional quality glass that is crystal clear and durable. A pressure seam is sometimes visible, which is the mark left by the mold in which the glass is pressed. It is the characteristic of pressed machine glass, symbolizing its French heritage.