Gemstones have living energy. Every gemstone has several attributes. Good luck is a part of the energy of many stones. There are times it may be more helpful to use more than one stone for the luck needed. At times a gemstone's energy seems to prefer one person to another. This is why it is advised to experiment with gemstones. As we change our way of life our vibrations change, that is why some gemstones will work differently on the same person at different times.