how to assay silver

最佳答案 - 由投票者2008-05-10 21:32:02选出

1.looks up degree of hardness silver jewelry quality more high-grade softer, the surface pure whiter is smooth. Take 60 gram about silver bracelet as an example, if as soon as pulls with the hand opens, does not have the tension, its quality about 95%; If a little tension, quality approximately in 80%-90%; If the tension is bigger, quality below 70%.

2.looked the crop for rotation cuts the silver accesories or folds, watches its crop for rotation the color. If accesories soft, crop for rotation thick and supple, slightly brings micro to be red, quality approximately about 95%; If with hand bend harder, the stubble words but bring the ash, or slightly has micro is red, quality approximately about 90%; If degree of hardness is bigger, crop for rotation light red, yellowish white or belt gray, quality approximately about 80%; If bend hard, the crop for rotation assumes micro is red, micro yellow, sienna isochromatic, quality approximately about 70%; If in stubble lipstick belt black, or Huang Zhongdai is black, quality in 60%.

3.the silver medicine wipes tries 磨出银道 (with to try same gold) the silver accesories in the touchstone, (silver medicine is mixes synthesis software shape with the silver medicine with aluminum dusting powder and mercury) in 银道 on to spread wipes, hangs silver medicine many qualities high, hangs the silver medicine few qualities to be low, does not hang the silver medicine is the counterfeit goods.

4.distinguishes the color law to distinguish its quality and the genuine and fake with the eyesight. Quality high, has a liking for pure white, is exquisite, has the gloss, and India has mark and so on factory, shop number on the jewelry; Quality low, the color assumes micro yellow, works roughly; The vacation silver jewelry luster is gloomy, is not bright and clean.