Initially, the shells are too large to as "ice tray" for sale. In these cups go easy 6-8 scoops of ice cream - only who eats so much? If you give only 2-3 balls in, swim around these poor, the appearance is gone. For salad or similar, the shells are too shallow.
The glass itself is (as a layman I would say so) - Low to pressed glass.
As usual with Leonardo, the glass is not colored, but merely coated with paint. Who makes the mistake so to give a dish in the dishwasher, which is notice very quickly because once then peels the paint and the glass is milky - the shell can then be disposed of in the trash. On the packaging but is not an indication to find that only hand cleaning.
I am very disappointed about this product and for 6 of these shells around 50, - Euro to be paid, you should think very well.