Crystallophobia refers to the fear of crystals. It is a rare phobia that affects a small segment of the population. However, there are various other synonyms that can be used instead of crystallophobia. These synonyms include crystalphobia, crysophobia, and baryophobia. All of these terms describe the fear of crystals. While not as well-known as some other phobias, the fear of crystals can be just as debilitating for those who suffer from it. It can be triggered by anything from seeing a crystalline structure to hearing or reading about it, and can lead to anxiety, panic attacks, and avoidance behavior.