What is the difference in value between unburned and burnt gemstones

Optimization: Optimize natural gemstones by heating the method, and the optimization is still natural.

Fired and unfired is actually an optimization method for gem-quality corundum (not just sapphire) by heating the gemstone to enhance its clarity and color. This method has been widely used in the jewelry industry since its invention, and about 90% of the blue sapphire and ruby on the market is heat-treated, or "burned". Heat treatment is considered to be a natural treatment, so gemstones that have undergone heat treatment are also considered "natural gemstones", and world-renowned gem laboratories consider heat-optimized gemstones to be "natural gemstones".

This concept is relative to diffusion treatment, lamination and other means, those that belong to people are non-natural gemstones).

Before I talk about theory, let's use a disciplined analogy:

Thermal optimization is equivalent to cultivating "premature" gemstones in the nursery of premature babies, similar to recreating an underground environment where gemstones are conceived.

Upstairs is right, burning is optimized, industry recognition is burned, or natural ruby, more than 90% of the market is burned, natural ruby, rough stones, you can **, it is estimated that it is far from what you see in the jewelry store, and the origin can basically be judged whether it has been burned, almost all of Thailand have been burned, and it is still good to burn, and the filling is terrible It is not natural to prescribe only for you.

The difference between burnt and unburned is explained as follows:There are three main differences between burnt and unburned:

1. The process is different, the burned is optimized by heating, and the unburned is naturally formed;

One of the main differences between fired and unfired is that fired is a technical term for optimized gemstones, which refers to gemstones that have been optimized by heating, while unfired refers to gemstones that are naturally occurring and have not undergone any optimization treatment.

2. The color is different, the color of the burnt gems is bright and uniform, and the color of the unburned gems is slightly dark;

In addition, there is a certain difference in the color of burnt and unburned gemstones, and the color of the gemstone will become brighter and more uniform after it is optimized by heating. The color of unburned gemstones will be slightly duller compared to that of burnt gemstones.

3. The purity is different, the purity of the burnt gemstones is high, and there are certain flaws in the unburned gemstones.

There is also a difference between the purity of burnt gemstones and unburned gemstones, after the heating of burnt gemstones, its purity will be greatly improved, and there are almost no impurities inside, while natural gemstones generally have certain imperfections.

Burning and unburning mainly refers to sapphire, and the gap between the two is very large, sapphire burning means heating, if the sapphire is heated will better improve the color and clarity of sapphire.

Therefore, the sapphire can improve the quality of the sapphire after burning, and at the same time, the sapphire can also be optimized and treated when burning, so the sapphire with burnt is a lot of attention from consumers, and some other substances are also added in the process of heating the sapphire.

The difference between burnt and unburned is **, burnt is to heat the sapphire, so the clarity and color of the sapphire are better, the unburned sapphire refers to the sapphire that has not been heated, and it is very normal to have a burnt sapphire. But the rarity of unfired high-quality sapphires is great, so it is higher.

Natural rubies are rare in reality, and 95% of the market is fired. It's hard to say clearly, it's obviously ten times worse. The easiest way to tell if there is a burn is to look at the GRS certificate.

If H (heated) is written in the annotation item of the GRS certificate or in the treaty item of the Gubeling certificate, it is burnt. If Ruby is the target for collection, unburned Ruby is of course the best choice. Natural rubies can reach the collector's level, and their own conditions must be superior.

Color, clarity, weight, cut, and origin are all unquestionable. However, there are too few rubies that can meet this condition. Most rubies have cracks and impurities, and only a few are pigeon's blood red.

Natural unfired ruby is a natural ruby that turns red naturally by geothermal heat in its natural state. Firing is to mimic natural conditions, changing the color and texture of the gemstone without adding any chemicals, which is allowed in the jewelry industry. The advent of "firing" can make some rubies with light color and many impurities darken under precise temperature control.

After the internal inclusions melted, the clarity and transparency of the ruby improved, and the change was stable. The quality of the rubies that need to be "burned" is not too bad. A bad ruby isn't worth our trouble.

Once the ruby is "burned", the purple color can be removed to highlight the purer red color. Inclusions that make the ruby lighter and cloudier can also be removed. If the ruby has a star effect, it will also emit more sparkling stars when heated.

"Burning" is a way to optimize heat supply. It does not alter the elements inside the ruby, nor does it add external elements. It's the physical way to make a ruby look prettier.

Generally speaking, if it is the same ruby, the ruby that has been "fired" is more expensive, while if it is the same quality ruby, the unfired ruby is more valuable and more expensive. Whether the ruby is burned or not actually has little effect on the ruby itself. Natural rubies are a treasure of nature, and there are sure to be some traces of growth left inside.

Physically optimizing them to enhance the look and feel of rubies is a great way to do so.

1. The quality is differentRuby.

It is a natural multi-lobed and multi-inclusional gemstone, so the crystal particles of the ruby are relatively small, and the high-quality gemstones are very rare, the unburned ruby is the ruby that has not been heated, the quality of this ruby is very good, and the burned is because the quality is not very good, so the quality of the ruby is improved by burning.

2. Different:An unburned ruby** is more expensive than a burnt ruby**.

3. Whether it is accepted by the industry and consumers is differentThe unburned gemstone industry and consumers are easy to recognize and accept, and the burnt ruby appears, and there are substances left in the gemstone seams after adding other substances or heating, which is not recognized and accepted by the industry and consumers.

No burningRuby. The differences with burnt rubies are as follows:

1. The quality is different

Ruby is a natural multi-lobed and multi-inclusion gemstone, so the crystal particles of ruby are relatively small, and high-quality gemstones are very rare, unburned ruby is not heated ruby, this kind of ruby quality is very good, and the burned is because the quality is not very good, so use burning to improve the quality of ruby.

2. Different:

Unburned rubies** are more expensive than burnt rubies**.

3. Whether it is accepted by the industry and consumers is different

The unburned gemstone industry and consumers are easy to recognize and accept, and the burnt ruby appears, and there are substances left in the gemstone seams after adding other substances or heating, which is not recognized and accepted by the industry and consumers.

Rubies have a firing and unfired contrast

To put it simply, the so-called firing is the improvement of the quality of the gemstone by means of heat optimization. In fact, the natural formation of gemstones is a process of firing. In addition to diamonds and peridots.

Formed in the Earth's mantle.

layers, other gem minerals are formed in the earth's crust, and they are heated by high temperatures and pressures deep in nature before they become gemstones.

Heat treatment is the process of placing inferior quality gemstones in a heating facility to simulate an infinitely close to the natural environment.

The heating conditions of the gemstone are heated, so that the color, transparency and clarity of the gemstone can be improved in a long-term and stable manner. However, heat treatment optimization is not foolproof, and sometimes the heat can also burn the gemstone.

The heat treatment is ruby and sapphire.

The most commonly used optimization method is that there is fire after heat treatment, and there is no burning if there is no heat treatment. After heat treatment, the color of ruby and sapphire will become more vivid, beautiful, and more transparent, and there is still room for collection and appreciation.

"The more common ruby reports on the market can be divided into domestic and international, domestic jewelry identification and testing reports will not mark whether the ruby is burned, only some international certificates, such as: GUBELIN, SSEF, GRS, AGL, etc., will mark whether the ruby is burned, in the remarks "comment" column with "H" dedicated, in the brackets after H with different lowercase letters to indicate different heating methods.

The international certificate will show that there is no burning The domestic certificate will not be burned pigeon blood red means that the color is very good, no optimized natural color, and the specific ** has to be based on the size.

It is not uncommon for gemstones to be unburned under the CGL report, and it is not uncommon for them to become burned after the GRS re-inspection, so if the certificate of the gem belt is CGL, it is better to ask for a re-inspection to avoid buying a burnt gemstone as an unburned gemstone, which will be a big loss.

There are identification marks for whether they are burned or not. So if you're concerned about the level of detail in your gemstone examination, definitely. If the h on the certificate is followed by parentheses, you have to think clearly that this freshly burned gemstone is not worth much, no.

The GIC certificate does not have a burn-in mark. GRS certificate has. In the international certificate, whether there is burning or not is generally marked, and some will also go to the heating method and the grade of the residue after burning, while the domestic certificate is rarely correct.

It can be difficult to distinguish between fired and unfired with the naked eye, except for very obvious features, such as filled gemstones, where there are cracks in the surface of the fractures.

The color of a gemstone is an important characteristic in evaluating its quality. If the gemstone is pure in color and consistent in tone, then its ** will be high. Naturally occurring gemstones have undergone tens of millions of years of high temperature and pressure.

International certificates will indicate whether there is burning, and domestic certificates will not.

Click to follow not to get lost, pay attention to Gilder, you must have something The mineral name of sapphire is corundum, which belongs to the corundum group of minerals, which refers to all corundum gemstones except ruby.

Ordinary people need to look for a reputable business, carefully check the certificate, and carefully check whether things are consistent with the gemstone certificate.

How to see if the ruby is burned or not? Only international certificates can give you the answersPaying attention to the auction is the daily homework of jewelry insiders, the other day I saw that Sotheby's will hold a magnificent jewelry and noble jewelry auction in Geneva on May 14, and most of the lots this time have a certain history

Although whether a ruby has been burned or not can be determined by a certificate, not all reports will indicate whether the ruby has been burned.

It is necessary to further enhance our cultural communication power, news influence, and national soft power by holding such large-scale international events.

Passing through the forest, there is a field. Walking on the grass, soft ground, rustling sound. It was the grass greeting pedestrians.

Only the traditional heat treatment of the ruby national inspection is recognized, the same is a natural gemstone, but the same quality of unburned ruby on the ** is 3-5 times more expensive than her. In addition, the ex-brother, the heating Hui Sui attack treatment is not shown on the domestic certificate, and an international certificate is required to prove it. However, if the stone is burned and processed at the same time, such as filling, diffusion, dyeing, etc., then the stone is not a natural gemstone, and this kind of stone is not valuable.