Gemblowing tricks, uplifting pearl life

While the transparent and sparkling gems costing from a few hundred thousand to tens of millions of USD are hunted by gem collectors around the globe, they are still quiet in Vietnam, currently quietly. circulation of gemstones by artificial tricks. Not sure when spending billions of dong to buy a diamond, ruby ​​(ruby) or sapphire, the stone player already owns an authentic gem.

Technique “lifts” jade

Gemstones range from marble, multicolored stone to diamond or ruby ​​… But in all, gem players still prefer ruby ​​or sapphire. Simply put, wearing gems to add luxury to yourself is one thing. But, wearing stones for yin and yang, networking in business or getting married is another story. A gem dealer told us that at the moment consumers are very fond of buying jewelry with gems in color to match their age.

However, that is just a matter of age. There are gem players who also wear stones according to their birth month for good luck. In addition to this age-old story, gem players believe that anything must have support stones.

As in the bedroom of the couple, placing an onyx stone containing water will increase the likelihood of sex, when gambling with a galaxy quartz will be in luck, as a leader or manager should bring amethyst to increase sex. Increase the understanding between employees and leaders, facilitate work …

However, even if the gem players have money, the gem resources available in the wild cannot meet this need. So the great tricks to turn witty stones into gems appear.

In the past, people who “blew” gems liked to use a torch plus a few catalysts to turn the ugly, opaque white stones into the pure pink, characteristic of ruby. Suppose you want a red stone to change color that only needs to be heated in an oxidizing environment and the addition of chromium is a beautiful ruby. Similarly, for a certain amount of titanium and iron, the jade will be immediately present. However, that is just the way the hands “blow” petty gemstones at Luc Yen gemstone market (Yen Bai).

The most popular gem “blowing” jade is still ruby. Usually, with the exception of the Antarctic region, other territories often have natural ruby ​​deposits. But, only the ruby ​​in Asia is the most popular gem player. Especially ruby ​​is sourced from Myanmar, Thailand, Sri Lanka and Vietnam. For natural jade, color is still the most optimal standard when selected. However, beautiful jade must have all the elements “shape, sharpness, quality” or “hardness, color and rarity”.

For rubies, the gems who like and are also the most precious is the clear, lustrous transparent ruby, the red color commonly referred to as “pigeon blood”, the most perfect being dark to medium in color. In addition, other ruby ​​colors such as orange (red yellow), burgundy, purple and pink are all secondary.

Ruby – gem players’ dream.

For people who “blow” professional jade, have a laboratory, it’s a small matter of jade color or light and dark color. The most commonly used method of “blowing” jade is using heat. With a thermal device that can reach a temperature of between 1,800oC and 2,400oC, a bad jade turns into a beautiful gem. With this heat, the silk threads (veins) in the jade are completely broken and the color of the jade will be significantly improved.

For the fissure, imperfect gem in nature, the people “blow” the jade to fill those cracks with lead glass. When the jade is heated at high temperature, the people “blow” the jade to add to the cracks of the natural jade with lead glass to increase the transparency of the jade. Raw pearls are first polished to remove surface impurities because they, if not removed, affect the luster of the jade after “blowing”.

After polishing, the jade “blows” will clean the rough spots with hydrofluoric acid. Removing this rough part, the jade will be put into heat treatment for the first time. This process does not allow any substances to enter the gem, to remove again the impurities in the crack. After that, the jade is heat treated a second time.

In this heat treatment, in addition to the addition of chemicals, the jade will be submerged in oil and covered with glass powder containing lead after dissolving. The lead glass powder, when heated, will turn transparent to gold and evenly dye all cracks of the jade.

As soon as the “cold” color is cooled, the jade will be transparent and no trace. If it is necessary to add color to the jade, you can use glass powder with colorants such as copper or metal acids such as sodium, calcium, potassium …

In serious gem trading companies, they will recommend to customers this is a heat treated gem and the price of jade will be greatly reduced compared to natural gem. Sometimes, the price of heat treated jade is only about 1/10 of the price of natural jade.

A person specializing in trading precious gems in Ho Chi Minh City, when talking to us, said very truthfully: “Raw pearls put two together, we can see which is beautiful and which is bad. If the jade has been heat treated, the talent can’t see it. At times, the heat-treated jade is many times more beautiful than the natural jade “.

Like ruby, sapphires are also “blasted” by the jade upgrade in such a heat treatment. With sapphire stone, to add yellow or green color to the stone, just add manganese and titanium in the heat treatment process, the sapphire will be radiant. And when the jade buyer spends a few tens or hundreds of millions of dong to pick up a ruby ​​worn for the network, before being jubilant and happy, the “great astronauts” “blow” the gem. .

If people play jade or run into risks when buying heat-treated jade, the diamond man is also susceptible to “spending a ton of money to buy diamonds … upgrading”.

The first factor to consider in a standard diamond is transparency. The more transparent a diamond is, the higher the value. The second is color, diamonds are usually white (in addition to pink, blue, brown, yellow) and the value of diamonds lower if the color progressively further from the original white standard. The color scale starts from symbol D (colorless) and descends gradually to E, F, G, H … to Z. Because of the strict standards for the rarest gem in the planet, diamonds is always the most expensive of all gemstones.

In order for the diamond to achieve maximum transparency, people “blow” the gem to polish it by placing the diamond in a pressure furnace at a high temperature. At this temperature, just adding plasma mixed with hydrogen gas ensures that diamonds will be so beautiful that they cannot be more beautiful. In the past, it was often quite expensive to upgrade diamonds. Because for diamonds to have a smooth surface like a mirror, the object used to sharpen diamonds is … diamond. However, from the introduction of “blowing” gemstones imported from Japan with alloys composed of titanium, aluminum and chromium, the polishing of diamonds has become very simple.

In addition to diamonds, rubies and sapphires, another gemstone is also very popular and is easily counterfeited by marble. Natural marble is believed by stone players to its medicinal properties. Marble is naturally dark green, dark to light, white or light green. With this gemstone, the longer the wearer goes to the water, the shine is very beautiful. Depending on the purity of the color and the brightness of the marble, the marble price is also insatiable. To create beautiful marble, people “blow” gemstones in many ways. But the most common way is still burning stone.

Burn the oven at high temperature, then push the stone into the oven, wait for the stone to melt, then pump the stone color. According to the flowing streak of rock, the color spreads very quickly and until the “cold” color, the people “blow” the stone only need to chop up beautiful pieces of color to carry out processing. And the color fragments that are not beautiful are crumbled to make precious stones paintings. The stone, after selecting a beautiful piece of color, will be transferred to handcraft workshops which are mainly made into bracelets.

That’s why recently, in many places in our country, gemstones have appeared. Distinguishing natural marble from burned stone is very simple. Sometimes, just by looking at the color can tell. Marble imitation marble usually gives a green color, it is almost impossible to create another color because the stone cooking and color injection determine the color standard for the burning stone (!?).

How to distinguish stone?

The main measure is still … to bring gems to the inspection center to see if they are natural or upgraded. Especially for rare types like diamonds. When bringing diamonds to the inspection center, diamonds will go through many stages of investigation with state-of-the-art equipment, from gemological microscopy, gravity scale to Rama spectroscopy … For example, the inspector will consider purity – the deciding factor in the price of a diamond. Each time such verification costs only a few hundred thousand.

But the test is not simply putting diamonds under a specialized machine (costing a few hundred thousand USD) and tattooing for a while can conclude whether the diamond is qualified or not. One of the characteristics that people use to blow gemstones in order to deceive people who play gemstones is that people who buy diamonds in our country are very “tied” with diamonds that are verified abroad.

In Vietnam, the Belgian diamond accreditation is trusted, but there are also many “upgraded” stones verified by small private establishments. Just one step up and customers can lose a few thousand more dollars. In addition, those with laser engraved letters in Vietnam also increase in price compared to non-engraved ones from 500 to 600 USD. But in some other countries, especially Thailand, it only takes a few tens of dollars to engrave the letters sink on diamonds comfortably.

That’s the story of diamond traders bringing diamonds from Vietnam to Thailand, both traveling and engraved on diamonds to raise prices. It is not even excluded that textured gem traders with small inspection centers to deceive customers to buy gemstones.

However, with gems blown to the level of sophistication, sometimes the test is also redundant. Like “super fake” diamond, also called moissanite. It has a thermal conductivity similar to diamond, so using a thermal conductivity tester is completely useless. Until now, this type of diamond is still a puzzle for diamond testing centers.

Currently, playing gems is still a game with bold elements “lucky – unlucky” or there is a story about “gems looking for people” as rumored by the players. It is only certain that, according to the advice of Mr. Dinh Khac Duy – Deputy Director of Van Sai Gon Trading Co., Ltd specializes in trading gems, “In order to minimize risk when buying gemstones, Customers should look for reputable addresses with good warranty ”. Perhaps, apart from this way, gems players have no other choice (!)

According to the Wheel (CAND)

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