We can tell from its definition that the word "rhinestone" can be used widely. From the high-grade Swarovski crystal to normal glass stones or inexpensive plastic stones like acrylic or resin material, they can all be called as rhinestones. There are many kinds of Rhinestones such as Hotfix Rhinestones, Glass Flatback Rhinestones, Flatback Rhinestones, Non Hotfix Rhinestones, Shaped Rhinestones, Non Hotfix Shaped Rhinestones, Hotfix Shaped Rhinestones, Nail Rhinestones, Small Rhinestones, Micro Rhinestones, etc. http://www.cyrhinestones.com/hotfix-rhinestones/