Tonsil stones are small, hard lumps that form when debris becomes trapped in pockets in the tonsils. They are made of hardened minerals, food particles, and bacteria. While tonsil stones are generally ...
Those five are pyrope, almandine (also called almandite), spessartine, grossular (grossularite), and andradite. A sixth, uvarovite, is a green garnet that usually occurs as crystals too small to cut.