Gold in 999 identified: How to distinguish between sand and gold?

Gold in 999 identified: How to distinguish between sand and gold?

In daily life, we often hear the gold identified by 999, which represents high purity gold.But sometimes we encounter some substances similar to colors or appearances, such as sand gold, which is easy to make people mistakenly think that it is gold.So how to distinguish between sand and gold?The next step will be introduced in detail from the aspects of appearance, hardness, density.

Appearance

The first thing to pay attention to is the appearance characteristics.Gold usually shows bright and shiny colors, with unique shining effects.Shajin is usually darker, and there is no unique luster.In addition, if you carefully observe with a magnifying glass under the sun, you can see that the real gold will reflect more dazzling light.

Hardness Testing

Secondly, it can be distinguished by hardness testing.Because gold is a very strong and durable, not easy to deform or scratching materials, there is almost no trace when using hard object scraping.The sand grains are relatively soft, and it is easy to be scratched and left traces under the effect of stress.

Density

In addition to the appearance and hardness, the differences between the two can also be identified by density determination.Because the truly pure 999 logo gold has a very high density, the weight should be heavier than the same volume of water when weighing; if it is caused by excessive impurities or other components, it may be made after dilution.The gap between pure gold is large.

X -ray fluorescent analysis method

X -ray fluorescent analysis method is also one of the fast identification methods. By detecting element composition and content in the sample to distinguish whether the real and pure 999 logo black diamond signature is fine. Women's later production of see -through diamond eternal high -level, romantic and unrulyEncyclopedia knowledge assistant to read women's necessary tips for women!If you like this article, please share with you about the beauty around you ~ For more knowledge about makeup and skin care, please pay attention to Zhihu column **** girl, follow my Weibo @小 怡 如果.Finally, I wish you a good mood every day!thanks for reading!