Quartz is the most plentiful substance on earth. You may have a microscopic speck of it in your eye right now! That’s what that itch is. But it also grows in massive crystals weighing tons.
The varieties of quartz produced have given jewelers beautiful gems to design around for centuries. Ancient Greeks believed the purple tinted amethyst, a quartz variety, prevented drunkenness so they carved tiny goblets from it and drank to their hearts’ content.