Have you heard the maintenance of jade jewelry in the refrigerator? Is this approach reliable? Yesterday, Fujian jewelry experts told reporters that jade as a valuable item, the wearer needs to be carefully maintained, and improper maintenance methods will cause damage to jade jewelry, there is no scientific basis for the maintenance of the refrigerator.
Buying jade is easy to raise jade. Jade jewelry maintenance has a certain doorway. A recent news said that a foreign aunt listened to the rumors and put the jade bracelet worth 60,000 yuan into the refrigerator to freeze the "maintenance". As a result, after the thawing, the bracelet broke.
“There is no scientific basis for the preservation of jade in the refrigerator.†Jewelry experts from the Fujian Provincial Jadeite Association told the reporter that most consumers do not know the composition of the jade color. The green color of the jade is caused by chromium or omphacite. If the chromium is too much, the jade will turn yellow-green, and if the omphacite is more, it will be blue-green. The composition of omphacite is calcium, aluminum, magnesium and sodium. These metal elements are very active and are very susceptible to oxidation even at normal temperatures. After oxidation, these metals are yellow or gray, which is why the jadeite-containing jade is easily modified. It is for this reason that some people think that putting jade in the refrigerator can reduce the possibility of jade variants. But metal has two states: elemental state and ion state. The ion state is very stable and the elemental state is very active. Aluminum, sodium, potassium, calcium and magnesium are very active metal elements. They are very stable after being ionized. The metals in jade are all ionic, so they are very stable. The average household refrigerator temperature is about -20 ° C, this temperature can not prevent the metal reaction, because the metal and oxygen reaction speed is very fast. Therefore, the jade bracelet is placed in the refrigerator for "maintenance" and will break after thawing.
In this regard, the person in charge of the Fuzhou jewelry inspection structure said that the jade maintenance "fear of cold" is also "fear of heat." Although jade has a high melting point, it must be protected from high temperatures during daily wear. Because the jade is burned, it will increase the internal molecular volume, make the jade metamorphosis, lose moisture, and lighten the color. Therefore, experts advise consumers to try not to wear jade when going to a strong place in Rizhao to avoid excessive sunlight. Avoid cooking jade with high temperature or open flame when cooking. It is best to remove the jade jewelry.
In addition, experts reminded that daily maintenance of jade should be placed separately from diamonds and red sapphires. Because jade has a high hardness, it is easily cracked after collision. Sometimes it cannot be seen by the naked eye, but the molecular structure in the jade surface has been damaged. There are dark cracks, which greatly impairs its perfection and economic value.
Jade Knowledge | Jade Common Sense
The price is determined by the value. The price of jadeite is determined by the quality of jade itself, and its pricing is based on comparison. Specifically, it is thinner than color, variety, size, and how much and fine the process.
Color: The color is not as deep as possible, but the more vivid the better. Deep and dark is not as light and bright, the more green parts, the higher the value, the more green the higher the value.
The seed: that is, the thickness of the crystal particles. The more transparent, the finer the crystal particles, the better the jade, which is often said to be "good in variety, water head". The so-called "property buys seeds, laymen buy colors", when the Qing Dynasty and the Republic of China, jade is green, it is worth the money, no green is waste, and now the seeds are getting more and more valued. From 2001 to the present, the price of pure white glass that was not valued before has increased by 50 times.
Thin and small: Relatively speaking, the emerald is of course more valuable, but it must be reasonable, but also have a sense of beauty. If it is too big, there is not much room for appreciation. For thin and thick, of course, it is also thick, but it is difficult to achieve with more materials and complete materials. In addition, the plump beauty of the plump is also better, but also pay attention to a reasonable proportion.
Process: There is a very famous saying in the jade processing, called "nothing to do flowers." There is no chapped, faulty jade raw material, it is not easy to engrave the line pattern, many lines are used to avoid the flaws on the raw materials. Therefore, in general, the carved bracelet is lower than the uncarved bracelet. The jade jewelry with the highest turnover is the ring face and the bead chain. A jade bead chain can sell for 80 million Hong Kong dollars, and a small jade bead is worth more than 3 million yuan. The reason why the ring face and the bead chain are the most expensive is that they cannot engrave any patterns or patterns and have the highest requirements on raw materials.
There is an interesting phenomenon in the price of jade. Whether you are a connoisseur or a layman, it is easy to look down on the price of low-end jade and the price of high-end jade. The lower the emerald, the higher the profit margin of the merchant, the higher the jadeite, the lower the profit margin of the merchant. Experts always dare to give big goods a big price, and if they dare to shoot like a connoisseur, they need to have the same vision.
Different quality jade, the price difference is very large. The color, transparency, structure, volume and craft of jade are important aspects of the value of jadeite. Usually the color of jade is red, green, blue, brown, black, white, purple, etc., among which the most precious is green. The high-quality jadeite should reach the words “yang, thick, positive, and harmonious†as the experts say. “Yang†refers to the bright and bright colors, and “rich†refers to the fullness and purity of the jade, “positive†refers to The color is pure and flawless, and "and" means that the jade color is even and soft.
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