What's hard, clear, and made from sand? Glass, of course! It is true that glass can be made in different colors, like blue and green, and that different minerals can be added to the formula to change its properties. At the end of the day, however, most of us think of clear glass when we hear the word "glass." We love the clear appearance of glass, and we hope the information presented on this website is just as clear. Whether you're looking for information on glass windows, glass mirrors, or the glasses that hold your juice, that information can be found right here.