Abstract: It is quite significant to understand and value a piece of jewelry through dating.There are many ways for the jewelry dating.Related materials or techniques of the jewelry at a period could give some objective and accurate clues to the jewelry dating.The jewelry history is also a history of material and technology development.The new jewelry materials such as precious metal,gemstone,pearl and synthetic material appear one after an other,and the new techniques such as metal working,gemstone cutting,gemstone setting and patents are invented endlessly,which leave the clues to searching the history of jewelry.In other words,the materials and techniques of jewelry are a series of time imprinting.