What is the difference between old gold and gold now?

The main difference is purity.

As a natural metal element, it can only be purified and cannot be manufactured at present, so the quality of purification determines whether it is of high purity. The original gold content of old gold is low, and the impurities are higher, because of the poor purification technology, which will be mixed with many other metal substances, and the gold content of old gold is generally about 50 or 60 percent, while the gold content of modern gold is generally more than 90 percent, because the development of industrial technology has brought a huge difference.

There are differences between old and modern mainly in purity, color, texture and processing technology.

1.Purity: The gold content of the old ** is low, the impurities are higher, and the gold content of the modern ** is generally more than 90%, due to the development of industrial technology, the purity of the modern ** is higher than the old **.

2.Color: The color of the old ** is usually more yellow and the texture is softer, while the color of the modern ** may be lighter and the texture is harder.

3.Processing technology: After the processing is completed, a process called "tempering" will be carried out to reduce the hardness of the metal and enhance its toughness and ductility. In modern times, this process is usually canceled to maintain its hardness and enhance its durability.

In general, there are significant differences between old and modern ** in purity, color, texture and processing technology.

The details are as follows:1Hardness is different:

The hardness of the ** friction type is only 2-3, which is very soft, so after the completion of the processing process, there is one more process, which is called "tempering". Tempering is to reduce the hardness of the first class, enhance the toughness and ductility, which in the past when the process level was not developed, it is more conducive to the manufacture of a variety of styles of jewelry. The new ** is the addition of 3D hard gold and other processes to improve the hardness of the **.

2.Different colors: In the past, in order to make the color of ** better, the gold store would use some turmeric powder to color the processed **jewelry, so compare the old ** and the new ** together, and you will find that the color of the old ** is more yellow.

Moreover, after years of wearing, the surface of the yellowed old ** will be oxidized to form a layer of slurry, and the color will be more yellow and older. 3.The purity is different:

The process of the past is not as developed as it is now, so some of the old ** processes in the past are old and the purity is not high, and these old ** are actually worthless. And now the new ** has higher requirements for purity, so many new ** are more valuable than the old **.

Extended Information:1The purity of the new ** is higher, the color and style are more beautiful, and the real value of the old ** is in its craftsmanship and historical value. In addition, the technology was not so developed before, many things were slowly hammered out by craftsmen with a hammer, the so-called slow work out of fine work, some well-preserved old ** can well show the craftsmanship level of the craftsmen at that time:

And now that science and technology are developed, many things can be mass-produced by machines, although the output has gone up, but it has lost the "spirituality" on the first jewelry. If it is an old ** with a long history, coupled with high-quality craftsmanship, its value is much higher than the value of its own material.

2.Historical precipitation: After the accumulation of time, the unique historical traces of the old ** make it have a stronger historical artistry, and for people who like traditional styles, the old ** is more charming.

1. Difference in gold content: The gold content of hard gold is very low, and most of it is metallic substance. ** High gold content and is a high-density gold nugget.

2. Hardness difference: hard gold is doped with other metals, and the hardness is very large. **Is pure gold soft texture.

3. Difference in processing technology: hard gold is made by electroforming. **It can be done by simple smelting.

4: Difference in use: Hard gold is mostly used for various inlays. **Mostly used to make jewelry.

Hard**:Hard refers to the physical object, which is for pure gold, and after the process, it loses its original soft texture. Also known as "Thousand Feet Hard**".

Thousand-foot super-hard**, made of ** electroformed with a content of 9999, and the hardness is improved by special technology. Solves the design limitations caused by its soft properties and significantly improves the delicate performance of the appearance of the jewelry.

**：

** is the elemental form of the chemical element gold. It is a soft, golden-yellow, corrosion-resistant ***. Gold is one of the rarest, more precious and most highly valued metals.

When gold is melted, the steam emitted is yellow-green; During the smelting process, its gold dust is usually brown; If you cast it into a thin sheet, it can even transmit green light.

The distinction is generally based on the gold content of the first as a distinguishing mark, which is specifically divided into four types: red gold, colored gold, mixed gold and K gold.

1. Pure gold: Pure gold generally refers to the content of ** between, and our common jewelry such as **necklace is pure gold.

2. Color gold: also known as secondary gold and tide gold, refers to gold with low fineness. Due to the different content of other metals, these ** have a high fineness of up to 99% and a low color of only 30%.

3. Mixed color gold: It refers to the fact that in addition to containing copper, zinc, lead, iron and other metals. According to the different types and quantities of metals contained, it can be divided into small mixed gold, large mixed gold, bronze large mixed gold, leaded large mixed gold, etc.

4. K gold: refers to the silver and copper in a certain proportion, according to the formula of pure gold is 24k. Generally speaking, the higher the proportion of K gold in silver, the greener the color.

If the proportion of copper is large, the color is purple red, which is generally **ornament-based, such as a gold ring is 20k, which means that the content is 20 24 * 100% =.

**The types are as follows:

1. Classic physical object**.

2. Flexible spot**.

3. High threshold ****. <>