What is a herring stone? How do you pick it? How to polish and maintain? How much is one yuan?

The herring should be quite familiar, but you may not have heard of it with a herring stone hidden in its head. So what is the herring stone? How do you pick it? How to polish and maintain?

Herring stone, also known as black carp stone, fish shock stone, fish essence stone, fish pillow stone, is the horny hyperplasia of hard food such as crushing snails under the throat of herring occipital bone. Its color is yellow and tender, its shape is like the heart, after drying, it is as hard as stone, glittering and translucent, such as jade, it is regarded as a rare item in the Hakka area. String can be tied to the child's wrist, it is said to exorcise evil spirits, prevent children from being frightened, Nafunalu's role, hence the name herring stone.

Seiko-made herring stone, such as angel muscle coral, Selby Saiga antelope horn, bright like amber beeswax, people can not put it down. The herring (black carp) species with this stone, also known as Luoyuqing, belongs to the carp family herring fish, freshwater fish, the weight can reach tens of kilograms. The fish likes to eat hard snails, and the herring stone is a part of the throat below the herring's occipital bone, which is used to help crush the snails and evolves over the years. Other general fish do not have this stone, so it is rare and precious. After the herring stone is removed and dried naturally, the material is stable and can be preserved for a long time. Herring stone on top of a treasure is about 10 yuan each, weighing between 54.3 and 4.8 grams. The price of the finished product varies according to the process, and there are hundreds of them.

Since the herring stone is so magical, how can we get it? Let's take a look at the detailed process of netizens collecting herring stones:

How to pick the herring stone?

The herring stone is located on the occipital bone above the teeth of the throat of the herring. The heart-shaped foreign body with a ring embedded in the upper jaw but relatively independent and not connected to other fish bones can be found in this area. In general, the obvious difference between it and other bones can be seen with the naked eye.

Stone extraction process:

1. Prepare tools, a pair of scissors, a spoon, cut off the herring head along the big joint of the pectoral fin.

2. Cut the big joint of the pectoral fin of the herring with scissors, which can ensure that the herring stone will not be hurt.

3. Break the large joint of the cut pectoral fin so that you can see the herring stone on the upper part of the occipital bone.

4. Pry the herring stone from the top of the fish occipital bone with a spoon. This step is actually the most critical step, fresh herring stone hardness is relatively low, pry improper easy to hurt herring stone, the formation of cracks and scratches, so it is very important to find suitable tools.

5. The arc of the stainless steel spoon fits the arc of the herring stone, so it can be skillfully pried off the herring stone without hurting the herring stone, which is much more suitable than using tools such as knives and scissors.

How to preserve herring stone?

Herring is an aquatic creature, fresh herring stone contains a lot of water. After the stone is taken, it can be processed only after it is dried and cemented into hard horniness.

Do not dry herring stone by drying, blowing and drying. These methods of rapid dehydration will cause dryness and humidity of herring stone to change sharply in a short time, resulting in a large number of cracks.

Therefore, fresh herring stones need to be stored in a cool, windless, light-proof and dry environment for more than half a month, waiting for them to dry naturally.

Dried herring stone, orange with powder, attractive color. If the raw material needs to be oiled and maintained, it should be oiled and maintained after the herring stone is dry. Early oiling will affect the moisture volatilization of the herring stone and affect the subsequent processing and grinding.

How to polish herring stone?

Herring is an aquatic creature, fresh herring stone contains a lot of water. After the stone is taken, it can be processed only after it is dried and cemented into hard horniness.

1. Preliminary cleanup

Herring stone has two sides, one side is growing and the other is chewing. The chewing surface is usually worn and aged seriously, and sometimes there is even a screw shell embedded in the herring chewing. The aged part of the chewing surface needs to be cleaned before polishing the herring stone.

In addition, the aging part of the herring stone situation has a heavy fishy smell, and polishing after cleaning can reduce the fishy smell in the grinding process.

2. Cementing "protecting the living".

This cementing process, which prevents cracking and ballast collapse in the grinding process, is called "protection" in jargon, and is more suitable for grinding machines or engraving machines, mainly to prevent ballast from happening in the grinding process.

However, herring stone has a certain toughness, not easy to collapse, manual grinding this step can be omitted, but we should pay attention to the problem of friction heat production during grinding. The chewing surface of herring stone is usually aged seriously, and the surface is covered with cracks. after cementing, the glue seeps into the cracks, which can play a good role in preventing cracks.

In addition, many friends like to use soaking oil to preserve and preserve herring stone raw materials. But in fact, bubble oil is not good for raw herring stone. After soaking oil, the surface cracks of herring stone are so full that it is difficult to distinguish.

Often, there seems to be no crack during processing, but cracks will appear after the final polishing and drying. In this way, it needs to be polished again, which is time-consuming and time-consuming. It is more suitable to be oiled and maintained after processing.

3. Modified rough grinding

Here we choose sandpaper as a polishing tool.

In the first step, 180-400 mesh sandpaper can be selected to remove impurities and cracks on the surface of herring stone, and polish the shape of herring stone neatly. Attention should be paid to the problem of friction heat production in the grinding process. Friction overheating may cause new cracks in the herring stone.

If you choose water sand for grinding, do not soak the herring stone in water. Herring stone has a certain water absorption, water absorption expansion of the herring stone is easy to crack in the process. Therefore, it is appropriate to polish it with a small amount of water and dry it immediately after polishing.

4. Fine repair and fine grinding

This step requires fine grinding of the rough-shaped herring stone. The thicker 180-400 purpose sandpaper will form scratches on the surface of the herring stone, so only the rough-ground herring stone cannot be polished directly.

Therefore, it is necessary to use 800 mesh, 1000 mesh, 3000 mesh, 5000 mesh sandpaper for transitional polishing to smooth the surface scratches as much as possible. Attention should also be paid to the problem of friction heat production in the process of grinding.

What should be paid attention to here is the control of water and humidity when polishing. The basic skill is that as sandpaper is used more and more fine, the amount of dipping water should be gradually reduced to 5000 mesh and above can be dry ground.

5. Fine polishing

Finely polished herring stone will show a jelly-like texture, pink and tender color, smooth as green.

How to mirror polish the herring stone?

Method 1: grind the herring stone to 5000 mesh, store it in natural shade for 1-2 days, and then dry polish it with 7000 mesh sandpaper.

Method 2: after grinding the herring stone to 5000 mesh, store it naturally in the shade for 1-2 days, then use cotton cloth to dip toothpaste directly on the surface of the herring stone until the mirror effect appears. Finally, wash the toothpaste quickly and dry naturally.

How to maintain herring stone?

The main component of herring stone is keratin, which is warm and moist in texture and attractive in color. Usually wear should pay attention to the change of dry humidity, prevent the wind, sun and rain, strictly prevent the direct blowing of air-conditioning heating, avoid water and like oil, otherwise the surface is easy to crack.

It can be stored in a dense bag or jewelry box and maintained with a little grease. It is recommended to use Vaseline, baby oil and other mineral oils, do not use edible oils, edible oils are easy to mold and breed bacteria.

In addition, the hardness of herring stone is about 3, dry herring stone fingernails are difficult to scratch, with toughness, do not rub with hard objects such as metal, otherwise it is easy to produce scratches.

Organic materials such as tooth corners usually appear aging phenomenon, that is, the so-called wrapped pulp, which is mainly caused by oxidation and changes in dry humidity, generally ranging from a few years to decades, depending on the specific preservation conditions.

Herring stone aging paste after the effect is like the effect of old amber, dragonfly wings, but also full of beauty.

Reference table for matching size and weight of herring stone and herring

The weight of herring stone is determined by its size and thickness, and the weight of herring stone of the same size may vary greatly due to the difference in thickness.

Herring stones depend on fish age, fish size and integrity. Herring stones produced by fish of the same size may vary greatly in size.

Action

There is a custom of pickling dried herring in many places in the south. In the process of drowning, try to take the fish stone a week or two after salting, the fish stone color will be older and older, and there will be internal tortoise cracks shown in the picture. Salty taste into it, children take the initiative to suck when they are scared, and adults with a sense of fear under the tongue can often stop their bad feelings. According to analysis, it is still psychological factors that may play a role.