Amber-The Greeks called this stone electron,which gave us our word for electricity,and its power to give off sparks when rubbed gives us a clue why even prehistoric people may have considered amber a lucky charm.

• 琥珀：希腊人把这种石头称为电子，这就让我们有了电这个词；这种石头摩擦时能冒出火花，又多少为我们解释了为什么史前时代的人们就可能已经把琥珀视为吉祥物。