Opal is a beautiful gem, and its unique luster makes it particularly popular in the jewelry industry, especially for young girls, who like to wear it. Let's see what opal is.

How to clean opal?

The standard opal purification is washed with royal salt, so don't worry that royal salt has no effect on opal. If it is sea salt, it will corrode opal. If you want to clean opal thoroughly, use a small bowl to hold the dissolved salt, but the water must be warm. Soak in 10g water for 24 hours each time. Finally, take it out and wipe it clean with a soft flannel. If soaked in cold water, put salt water in a small bowl, then soak the gem in water for 30 minutes, brush it gently with a small brush, and then take a bite with a paper towel.

If you want to clean quickly, you must buy some salt. You can only bury the gems and purify them. Every time a gem is buried for 24 hours. The only drawback of this purification method is that some artificially treated gems will appear. Of course, if your opal has not been artificially processed, don't worry at all. Therefore, everyone should know some common sense of jewelry maintenance, know the characteristics of the gems in their hands, and carefully maintain them according to the characteristics.

How to choose opal?

Opal is expensive, so you must pay attention when you buy it, so as not to buy fakes. When buying opal jewelry, you can put the cat's eye under the lamp, and then you can clearly see that it presents a clear light. When rotating, the light bar will shake left and right, which is Opal discoloration. It should be noted that there are other kinds of gems that can show the effect of cat's eye luster deformation, such as calcium carbide, apatite, blue crystal and so on. In addition, due to the fibrous structure of asbestos, there is another mineral with the same function, that is, tiger's eye stone, but its value cannot be compared with cat's eye.

In addition, you need to pay attention to the eyeliner of opal when buying jewelry. Eyeliner should be straight, even, uninterrupted, clear and not turbid, bright and not gloomy. Of course, you also need to pay attention to the weight of gems. The greater the weight of a gem, the greater its value. At present, opal with a diameter greater than 5cm is very rare in the market.