South red agate is a unique species in China. Its texture is delicate and its output is scarce. It was mined during the Qing Dynasty, which led to a sharp rise in the price of Laonan Red Agate. In ancient times, the South Red Agate was used as a medicine for nourishing the heart and nourishing the blood. The Buddha World believed that it had a special effect. The red pearl in the Seven Treasures of Buddhism was the South Red Agate. The South Red Agate has a gelatinous texture. Through the observation of light, even the red red South Pearl can also see its transparent color from the inside out. Just because the value of the South Red Agate is precious, so there is a series of counterfeit South Red Agate. How do you identify the imitation South Red Agate? And look at the following tricks that jewellery teaches you:
1, artificial burning red
Artificially burned red agate uses ferrous ions in the agate component. Heating causes the ferrous ions to oxidize to ferric ions, so that the white or gray agate becomes a red agate. The burnt red agate is dark and opaque, and the color floats on the surface, which is unnatural. From the appearance, it has a clear difference from the southern red agate. Since the burnt red agate is made from some light-colored agate, this type of agate lacks a sense of grease and warmth.
2, artificial dyeing
Artificially dyed agate uses agate with a low iron content, soak it in a second iron solution of nitric acid or a first iron solution for one month, then soak it in a solution of sodium nitrate for about two weeks, and finally heat and acidify it. Then it becomes red. This dyed agate is observed under a magnifying glass, and it can be found that its color is distributed along the site infiltrated by the interstices between the crystals, and has a strong glassy feel without a special oily texture.
3, manual injection
Injection molding is an optimization method for the southern red agate that has been developed in recent times. The South Red Agate stone that has been glued is easy to identify because there is a small bubble-like transparent inclusion on the outer layer. After engraving, the red agate is injected with a magnifying glass. It can be seen that it has a filament-like transparent texture inside. This line is relatively straight, and the penetration length is long, which is obviously different from the natural texture.
The above is the method of distinguishing the imitation of the South Red Agate. These methods are simple and easy to learn. As long as you buy your brain, you can choose the authentic South Red Agate.
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