Lapis lazuli - ancient Chinese called Jin Jing, a non-renewable rare ore produced in the landlocked country of central and western Asia. In recent years, it has been recognized by many Asian countries and has been highly sought after by the market! It is also driven by this kind of interest that there are various lapis lama falsification methods in the market, the most common of which is artificial dyeing.
After years of contact with the lapis lazuli ore and finished products, we have summarized some common common sense to help you choose the best natural lapis lazuli.
one look
Generally, the dyed lapis lazuli is colored with the fine lapis lazuli as the base material. The finished product of the over-colored color does not look like a color, and the natural lapis lazuli has a uniform color and a high porcelain feel.
Second, touch
The lapis lazuli of the low-grade dyeing technique feels a blocked waxy feeling, and most of the grinding process is rough and uneven, and the artificial enamel can be seen everywhere.
Third, identification
This part is the key we have to say. For the public, the most common and effective method of identification is to contact lapis lazuli with alcohol or acid. The dyed lapis lazuli acid or alcohol will quickly fade. Here we recommend the use of high concentration medical alcohol. Specific method: Take a proper amount of alcohol with a cotton swab, and repeatedly wipe the surface of the lapis lazuli for about half a minute. If the blue color on the cotton swab is dyed lapis lazuli, the colorless is natural lapis lazuli.
Fourth, summary
Alcohol testing is the most commonly used test method. It can test most of the dyed green gold on the market, but everyone remembers that there is no absolute thing in the world. According to our understanding, there is a high-tech dyeing method on the market called laser coloring, and the dyeing process is uniform. It is very difficult to identify with natural lapis lazuli. It is very difficult for the public to identify it. Here we suggest that when you buy lapis lazuli, it is best to choose the emerald lapis lazuli, because this color has not yet found an additive copy. The second is professional appraisal. We suggest that after purchasing high-priced lapis lazuli, you can go to the relevant national appraisal agency for professional appraisal. I believe that science is king!
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