All hand blown wine glasses are dishwasher safe.
It is our recommended way of washing them. They should be placed so that they are not touching other items.
A dishwasher will almost never break the stem, which is the main part that breaks while handwashing because of human error. Using a dishwasher extends the life of your hand blown wine glasses!
If you must handwash the glasses, consider putting soapy water in the glass for 30 minutes. That is often enough. If the rim needs to be further cleaned, make sure to hold the glass by the bowl when you rub the rim.
Polishing a glass is not necessary for enjoyment, and more for aesthetic appeal. If you would like to, make sure to hold the glass by the bowl when you polish the glass.