This paper deals with museum objects which for certain groups of people still have or may have a religious, ritual, or ceremonial significance. This could have consequences for the way such objects are handled or treated by conservators. Many ritual objects, especially those from South East Asian, Indian, and African cultures, were made according to strict ritual rules that prescribe the use of certain materials, and prohibit the use of others. Adhering to these prescriptions renders the object its religious or mystic value; ignoring them would produce a meaningless object. Often only certain initiated people are allowed to handle or treat ritual objects. Usually, conservators do not qualify as such. Decay of sacred objects does not necessarily mean a loss of spiritual value. In some cases restoration of such an object can mean an irreversible desecration, while in other cases an object may even require a ritual destruction. Some religious objects on the other hand, are required or at least preferred to be as beautiful as possible. Conservation without cosmetic treatment would make them unacceptable for devotional practice. Little attention has up till now been given to such problems. A questionnaire is added to collect information and experiences on this phenomenon. -- AATA