YFQ should be brand abbreviation. Thousands of feet of silver is a symbol of the purity of silver ornaments. It's hard to tell the true from the false just by looking at the mark.

Let me tell you a few small ways to tell the difference between true and false silver ornaments.

First, look at the color. The higher the purity of silver jewelry, the whiter the silver, and the surface looks even, shiny and polished. If it contains lead, the jewelry will appear bluish gray; If it contains copper, the surface of jewelry will be rough and the color will not be moist.

Second, weigh the weight. The density of silver is slightly higher than that of common metals, aluminum is light, silver is heavy, and copper is not heavy. Therefore, it can be preliminarily judged whether it is silver by weighing. If the jewelry is large and light, it can be preliminarily judged that the jewelry belongs to other metals.

Check the hardness again. 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 jewelry in an inconspicuous place with a pin. If the needle slips, it is difficult to leave traces on the surface, which can be judged as copper jewelry; If it is made of lead and tin, the trace is obvious; If the object has traces but is not obvious, it can be preliminarily judged as silver jewelry.

Finally, listen to the rhyme. Sterling silver jewelry fell to the ground and was not elastic. 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.