Category: - Fig Leaf Society
Crystal (glass) vibrators are simply a vibrator, whether it is a single or multi-speed style that is encased in a crystal sleeve, which is typically fashioned from Pyrex crystal or another brand of silicate glass.
Crystal vibrators are much cleaner than plastic toys as well because they are free of chemicals such as phylates.

The crystal sleeve also transfers the vibrations very well so you shouldn't notice any difference from what you're accustomed to.