Common inspection methods are: \ x0d \ x0d \ Look at color: The higher the purity, the whiter the silver, and the surface looks even, shiny and polished. If it contains lead, the surface will appear blue-gray; If it contains copper, the surface will be rough and the color will not be moist. \x0d\ Weight: The density of silver is slightly higher than that of general metal. Generally speaking, "aluminum is light, silver is heavy, and copper is neither light nor heavy." So weighing can preliminarily judge whether it is silver. If it is large in size and light in weight, it can be preliminarily judged that silver belongs to other metals. \x0d\ Check hardness: The hardness of silver is lower than that of copper, but higher than that of lead and tin, so it can be tested by marking with a pin. If the needle slips and it is difficult to leave traces on the surface, it can be judged as a copper ornament; If it is made of lead and tin, the trace is obvious; If the physical object has traces but is not obvious, it can be preliminarily judged as silver. \x0d\ Listening to rhyme: pure silver hits the floor, which is inelastic, and the sound is "bam bam". The lower the color, the lower the sound, and the sharper and higher the rhyming sound; If it is made of copper, its sound is high and sharp, and its rhyme is short and short; If it is made of lead and tin, the sound of falling to the ground is dull, short and inelastic. \x0d\ Of course, it is not an ideal method to test silver only by physical properties and experience. Only chemical methods can truly test the authenticity of silver.