wholesale stainless steel jewelry china Why can gold in ancient times with limited communication between regions, gold can serve as general equivalent

Nicolas

November 13, 2022 at 7:11 pm

ss jewelry wholesale Gold:
Gold (GOLD) is gold. The chemical element symbol AU is a soft, golden, corrosive precious metal. Gold is one of the rare and precious metals in metals.
Basic concepts
gold is valuable, and the value content is relatively high. The price unit of international gold is US dollar/ounce, and the price unit of my country's gold is Yuan/gram. To participate in future gold investment and get the chance of investment appreciation and value preservation in the gold market, we must understand the role of gold attributes, characteristics and its role in monetary finance. In ancient times, it was mainly used as currency, decoration and jewelry. It was the most precious metal. By 1751, platinum was discovered. Platinum resources were more rare than gold, more widely used, and more difficult to refine, so it was more precious. Therefore, gold is now tied with precious metals from the first precious metal to the status of platinum. However, due to the pure texture of the gold, it has many excellent properties. It is still the most popular precious metal.
The physical and chemical characteristics:

physical properties

color: beauty of golden yellow can be compared with the sun. The steam emitted when gold is melted is green; its gold powder is usually brown during the smelting process; if it is cast into a thin piece, it can also transmit green light.
The ductility: exceptional strong. 1 ounce of gold can be pulled into 50 miles long, and its ductility makes it easy to cast and is a good choice for making jewelry. Gold is the strongest in the metal.
Forgedness: secondary and fingertips. It can cause extremely thin and easy to roll up. 1 ounce of gold can be hammered to 4 million -foot thick and 100 square feet. The ancients hammered it into thin slices to decorate the temples and the palace. It is said that 1 ounce of gold can be used to fill the top cover of a house. If you have the opportunity to visit these ancient temples, you must pay attention or free gold films fall on your head!
The color of gold is golden yellow, metal luster, and no wayy. The hardness is 2-3, the pure gold is 19.3, and the melting point is 1070 ° C; it has good ductility and can be pressed into thin foil. It has extremely high heat transfer and conductivity. Pure gold is the best electronic conductor material.
Gold, as a precious metal, has good physical characteristics. "Real gold is not afraid of fire" means that the gold under the general flame is not easy to melt. The density is strong and the feel is heavy. Good toughness and ductility, strong guidance. Pure gold has gorgeous yellow, but after incorporating other metals, the color changes greatly. For example, gold and copper alloy are dark red, and the silver alloy is light yellow or gray -white. Jin Yi was grinded into powder, which is why Jin is scattered in nature. Pure gold jewelry is also easily worn and reduced.
The atomic order in the Menjiev cycle table is 79, that is, there are 79 negatively charged rotating electrons around the nucleus of the gold. Therefore, gold has good chemical stability. In the metal market钯, 钯, 锇, 铑, 铱, platinum and other metals are collectively referred to as precious metals.
Gold is a very soft metal, but it is not as good as lead and tin metal. It can be traces with nails on pure gold. This softness makes gold very easy to process. However For the manufacturer, it is very unsatisfactory, because this can easily hurt the decoration, make it lose its gloss and affect the beauty. Therefore, when making jewelry with gold, copper and silver are generally added to improve their hardness.
It gold is forged and easy to extend, which can be crushed to a transparent and transparent green foil with a thickness of 0.001 mm. 0.5 grams of gold can be pulled into a 160 -meter -long golden.
Golds are easy to wear and become extremely fine powder, so gold is often widely distributed in nature in the state.
Gold is a good conductor of heat and electricity, but it is not as good as four metals: platinum, mercury, lead, and silver.
The melting point of gold is 1063. C, melting gold has high volatility. As the temperature rises, its volatility continues to increase.
The pressure-resistant strength of pure gold is 10kg/ mm2. Its tensile strength is related to pre-processing methods, generally between 10-30kg/ mm2. When cold pulling gold, the strongest force.
It pure gold has a very beautiful grass yellow metal luster. It can be said that gold is the most yellow in all metals. Pure gold is not seen in nature, and metal impurities (first of all copper and silver) give gold to various colors and tones, from pale yellow to bright yellow and red. The color of gold also depends on the thickness of the metal block and its gathering collective state. For example, the thin gold foil is green in the face, and the melted gold is also this color, while the gold -melted gold is yellow -green, and the fine -grained gold is generally dark red or dark purple.
The natural gold can sometimes cover a layer of iron oxide film. In this case, the color of the gold may be brown, dark brown, and even black.
This can form alloys with many metals, because the atomic radius of these metals is very close to the atomic radius of gold; the radius of gold atomic is equal to 1.46 meters; 铋 1.46; silver 1.44; platinum 1.39. Therefore, gold can form gold and silver alloy, gold and copper alloy, gold and platinum alloy, golden cricket alloy, etc. These alloys are not compounds, but fixes. All the metals in the alloy are lower than the pure metal melting point. If the gold is heated to the close to the melting point, the gold can be melted like iron. The slim gold grains can melt into gold blocks. (L Egypt = 0.0000000L centimeters)
In the temperature is low, the gold powder must be pressed to melt together.
The melting with other metals can not only reduce its melting point, but also change the mechanical properties of the gold itself. Silver and copper can significantly increase the hardness of gold; arsenic, lead, platinum, silver, 铋, and 碲 can make gold crispy, and lead in this regard is more prominent. When stamping, it will become a broken block. Pure gold contains 0.01%lead. Its good and forgedness will be completely lost.
gold has the ability to absorb X -rays.
The gold is included in the ranks of compounds, and it is also reluctant to stipulate the precious metal family, but after all, it can interact with certain elements. Especially with halogen (chlorine, bromine, iodine) compounds to generate AUCL or AUC13, etc. Gold can also be combined with cyanide, mercury and hoof. In fact, there are only gold and hoof compounds in nature, and there are very few compounds of gold and mercury. All other compounds are made by manual, and "Thunder Gold" - (AU (NH) 3 (CH) 3) can also be obtained by manual methods.
Although gold is difficult to dissolve, it can still be dissolved in certain solutions. A small amount of gold can also be dissolved in water containing chlorine, sulfuric acid or corrosive acid. In Wangshui and cyanide dilute solution, a large amount of ion state is dissolved.
The crystals of gold belong to the shaft system. The shape of the crystal is often cube or octagonal. When the crystal is dissolved and then condensed, there is an irregular polygon. The slower the cooling, the greater the crystal.

The chemical properties

The chemical properties of gold are stable and have a strong corrosion resistance. It is generally not oxidized from room temperature to high temperature in the air, and it is insoluble in a single hydrochloric acid. Among strong acids such as nitric acid and sulfuric acid, only hydrochloric acid and nitric acid mixed acid (that is, king water) generate chloropa chlorine H [AUCL4]; when aerobic existence at room temperature, gold is soluble in solution containing potassium cyanide or sodium cyanide. , Form a stable complex M [AU (CN) 2]; gold is also soluble in solutions with sulfur pheasant; it is also dissolved in acidic solutions with chlorine gas. Gold does not work with alkali solution, but it can be generated with sodium peroxide when melting. The combined price of gold is -1, -2, 1, 2, 3, 5, 7, etc. Oxide has a triple oxidation two gold AU2O3, and chloride has a three-chloride gold AUCL3. In an acidic medium, chlorine h [AUCL4] or a complex m [AU (CN) 2] can be restored to metal zinc (zinc powder or zinc wire), sodium sulfate, hydraulic pheasant, etc. The sulfide will corrode gold and generate soluble sulfide gold. Exic acids in the soil and metabolites of certain bacteria can also dissolve trace gold.
This of gold is high, it is difficult to lose the outer electrons into positive ions, and it is not easy to accept electrons into anion. Its chemical properties are stable, and the affinity with other elements is weak. Therefore, most of the natural gold state in nature is in nature.
The average content of gold in the crust is about 1.1 million % (0.0011 ppm), and the content in seawater is about 100 billion % (0.00001ppm). The crustal movement and geological changes make the gold elements rich into gold mines. The gold ore with general industrial value is 2-3 grams/ton, the rich ore has 5-50 grams/ton, and the Fugu mine is 50-500 grams/ton. There are gold, the smallest ten grams, the largest tens of kilograms, and the rare large pieces of gold hundreds of kilograms. Because of some dog heads, commonly known as dog head gold, Indian scientists have found two nearly 2.5 tons of dog head gold ; Poor ore has industrial mining value at 0.1-1 gram/ton, and has industrial mining value at the current level of high 0.5 grams/ton.
The pure gold in nature is very small, often including silver, copper, iron, 钯, 铋, platinum, nickel, 碲, selenium, 锇 and other accompanimental elements. Natural gold contains 15%of silver in silver More than 20%of copper are called copper gold ore, with 5-11%of 钯钯钯钯钯矿矿钯钯铋铋铋铋铋铋矿矿矿铋铋铋铋矿矿矿矿矿矿矿.
The gold has a parental sulfur, often close to sulfur, such as pyroneite, poison sand, square lead ore, and 锑 ore.
Gold has a parentality. The meteorite contains gold (1150 × 10-12). It is 3 orders of magnitude higher than ordinary rocks.
The gold also has a bronze nature. In the element cycle table, it occupies the edge of the pro -copper and the parent iron element. Chemical behaviors are similar to adjacent elements, showing stronger iron properties. Copper and silver are rich in sulfide; and gold and platinum are mostly concentrated in metal phase. Gold in the earth is 0.8 × 10-6, the nucleus is 2.6 × 10-6, the mantle is 0.005 × 10-6, and the crust is 0.004 × 10-6. The abundance of gold in the crust is only 1/1 million of iron, 1/21 of the silver.
. More than 99 % of the gold on the earth enters the ground nuclear. This distribution of gold is formed in the long -term evolution of the earth. The golden crust formed in the early stages of the earth's development is high. Therefore, it can generally represent the old -fashioned green rock belt composed of early crusts, especially the combination of magnesium iron and ultra -magnesium iron volcanic rock. In various types of rocks in the crust, it may become the earliest "mineral layer" of gold mines.
In all, the abundance value of gold in the crust is already very low, and it has the properties of sulfur, copper nature, parenting, high melting point, etc. Thousands of times, to form a big mine and rich ore, gold must be rich for thousands, tens of thousands, or even higher. It can be seen that its huge gold ore generally experiences a considerable geological period. Mining can only be formed.
The main purpose and function of gold,
. Used as international reserves
． The preservation function
3. Risk aversion function
4. Use as jewelry decoration
5． Application of industrial technology
Gold is a metal found and utilized earlier. Because of its rare, special and precious, it has been regarded as the head of hardware since ancient times. It has the title of "King of Metals" and enjoys the reputation that other metals cannot compare. Its prominent position is almost eternal. Because of the status of gold in this' nobleman, it was a symbol of wealth and luxury for a while. It was used as financial reserves, currencies, jewelry, etc. So far, the application of gold in the above fields still accounts for the main position.

2 thoughts on “wholesale stainless steel jewelry china Why can gold in ancient times with limited communication between regions, gold can serve as general equivalent”

Dale
November 13, 2022 at 7:11 pm

southern wholesale jewelry jasper al 35501 In the case of different external environments, the nature of gold itself determines that it can act as general equivalent:

1. Rare in a certain range;

2. The nature of physical chemistry is relatively stable stable , Easy to storage and transportation;

3. Universal existence, can be used.

Log in to Reply
Nicolas
November 13, 2022 at 7:11 pm

ss jewelry wholesale Gold:
Gold (GOLD) is gold. The chemical element symbol AU is a soft, golden, corrosive precious metal. Gold is one of the rare and precious metals in metals.
Basic concepts
gold is valuable, and the value content is relatively high. The price unit of international gold is US dollar/ounce, and the price unit of my country's gold is Yuan/gram. To participate in future gold investment and get the chance of investment appreciation and value preservation in the gold market, we must understand the role of gold attributes, characteristics and its role in monetary finance. In ancient times, it was mainly used as currency, decoration and jewelry. It was the most precious metal. By 1751, platinum was discovered. Platinum resources were more rare than gold, more widely used, and more difficult to refine, so it was more precious. Therefore, gold is now tied with precious metals from the first precious metal to the status of platinum. However, due to the pure texture of the gold, it has many excellent properties. It is still the most popular precious metal.
The physical and chemical characteristics:

physical properties

color: beauty of golden yellow can be compared with the sun. The steam emitted when gold is melted is green; its gold powder is usually brown during the smelting process; if it is cast into a thin piece, it can also transmit green light.
The ductility: exceptional strong. 1 ounce of gold can be pulled into 50 miles long, and its ductility makes it easy to cast and is a good choice for making jewelry. Gold is the strongest in the metal.
Forgedness: secondary and fingertips. It can cause extremely thin and easy to roll up. 1 ounce of gold can be hammered to 4 million -foot thick and 100 square feet. The ancients hammered it into thin slices to decorate the temples and the palace. It is said that 1 ounce of gold can be used to fill the top cover of a house. If you have the opportunity to visit these ancient temples, you must pay attention or free gold films fall on your head!
The color of gold is golden yellow, metal luster, and no wayy. The hardness is 2-3, the pure gold is 19.3, and the melting point is 1070 ° C; it has good ductility and can be pressed into thin foil. It has extremely high heat transfer and conductivity. Pure gold is the best electronic conductor material.
Gold, as a precious metal, has good physical characteristics. "Real gold is not afraid of fire" means that the gold under the general flame is not easy to melt. The density is strong and the feel is heavy. Good toughness and ductility, strong guidance. Pure gold has gorgeous yellow, but after incorporating other metals, the color changes greatly. For example, gold and copper alloy are dark red, and the silver alloy is light yellow or gray -white. Jin Yi was grinded into powder, which is why Jin is scattered in nature. Pure gold jewelry is also easily worn and reduced.
The atomic order in the Menjiev cycle table is 79, that is, there are 79 negatively charged rotating electrons around the nucleus of the gold. Therefore, gold has good chemical stability. In the metal market钯, 钯, 锇, 铑, 铱, platinum and other metals are collectively referred to as precious metals.
Gold is a very soft metal, but it is not as good as lead and tin metal. It can be traces with nails on pure gold. This softness makes gold very easy to process. However For the manufacturer, it is very unsatisfactory, because this can easily hurt the decoration, make it lose its gloss and affect the beauty. Therefore, when making jewelry with gold, copper and silver are generally added to improve their hardness.
It gold is forged and easy to extend, which can be crushed to a transparent and transparent green foil with a thickness of 0.001 mm. 0.5 grams of gold can be pulled into a 160 -meter -long golden.
Golds are easy to wear and become extremely fine powder, so gold is often widely distributed in nature in the state.
Gold is a good conductor of heat and electricity, but it is not as good as four metals: platinum, mercury, lead, and silver.
The melting point of gold is 1063. C, melting gold has high volatility. As the temperature rises, its volatility continues to increase.
The pressure-resistant strength of pure gold is 10kg/ mm2. Its tensile strength is related to pre-processing methods, generally between 10-30kg/ mm2. When cold pulling gold, the strongest force.
It pure gold has a very beautiful grass yellow metal luster. It can be said that gold is the most yellow in all metals. Pure gold is not seen in nature, and metal impurities (first of all copper and silver) give gold to various colors and tones, from pale yellow to bright yellow and red. The color of gold also depends on the thickness of the metal block and its gathering collective state. For example, the thin gold foil is green in the face, and the melted gold is also this color, while the gold -melted gold is yellow -green, and the fine -grained gold is generally dark red or dark purple.
The natural gold can sometimes cover a layer of iron oxide film. In this case, the color of the gold may be brown, dark brown, and even black.
This can form alloys with many metals, because the atomic radius of these metals is very close to the atomic radius of gold; the radius of gold atomic is equal to 1.46 meters; 铋 1.46; silver 1.44; platinum 1.39. Therefore, gold can form gold and silver alloy, gold and copper alloy, gold and platinum alloy, golden cricket alloy, etc. These alloys are not compounds, but fixes. All the metals in the alloy are lower than the pure metal melting point. If the gold is heated to the close to the melting point, the gold can be melted like iron. The slim gold grains can melt into gold blocks. (L Egypt = 0.0000000L centimeters)
In the temperature is low, the gold powder must be pressed to melt together.
The melting with other metals can not only reduce its melting point, but also change the mechanical properties of the gold itself. Silver and copper can significantly increase the hardness of gold; arsenic, lead, platinum, silver, 铋, and 碲 can make gold crispy, and lead in this regard is more prominent. When stamping, it will become a broken block. Pure gold contains 0.01%lead. Its good and forgedness will be completely lost.
gold has the ability to absorb X -rays.
The gold is included in the ranks of compounds, and it is also reluctant to stipulate the precious metal family, but after all, it can interact with certain elements. Especially with halogen (chlorine, bromine, iodine) compounds to generate AUCL or AUC13, etc. Gold can also be combined with cyanide, mercury and hoof. In fact, there are only gold and hoof compounds in nature, and there are very few compounds of gold and mercury. All other compounds are made by manual, and "Thunder Gold" - (AU (NH) 3 (CH) 3) can also be obtained by manual methods.
Although gold is difficult to dissolve, it can still be dissolved in certain solutions. A small amount of gold can also be dissolved in water containing chlorine, sulfuric acid or corrosive acid. In Wangshui and cyanide dilute solution, a large amount of ion state is dissolved.
The crystals of gold belong to the shaft system. The shape of the crystal is often cube or octagonal. When the crystal is dissolved and then condensed, there is an irregular polygon. The slower the cooling, the greater the crystal.

The chemical properties

The chemical properties of gold are stable and have a strong corrosion resistance. It is generally not oxidized from room temperature to high temperature in the air, and it is insoluble in a single hydrochloric acid. Among strong acids such as nitric acid and sulfuric acid, only hydrochloric acid and nitric acid mixed acid (that is, king water) generate chloropa chlorine H [AUCL4]; when aerobic existence at room temperature, gold is soluble in solution containing potassium cyanide or sodium cyanide. , Form a stable complex M [AU (CN) 2]; gold is also soluble in solutions with sulfur pheasant; it is also dissolved in acidic solutions with chlorine gas. Gold does not work with alkali solution, but it can be generated with sodium peroxide when melting. The combined price of gold is -1, -2, 1, 2, 3, 5, 7, etc. Oxide has a triple oxidation two gold AU2O3, and chloride has a three-chloride gold AUCL3. In an acidic medium, chlorine h [AUCL4] or a complex m [AU (CN) 2] can be restored to metal zinc (zinc powder or zinc wire), sodium sulfate, hydraulic pheasant, etc. The sulfide will corrode gold and generate soluble sulfide gold. Exic acids in the soil and metabolites of certain bacteria can also dissolve trace gold.
This of gold is high, it is difficult to lose the outer electrons into positive ions, and it is not easy to accept electrons into anion. Its chemical properties are stable, and the affinity with other elements is weak. Therefore, most of the natural gold state in nature is in nature.
The average content of gold in the crust is about 1.1 million % (0.0011 ppm), and the content in seawater is about 100 billion % (0.00001ppm). The crustal movement and geological changes make the gold elements rich into gold mines. The gold ore with general industrial value is 2-3 grams/ton, the rich ore has 5-50 grams/ton, and the Fugu mine is 50-500 grams/ton. There are gold, the smallest ten grams, the largest tens of kilograms, and the rare large pieces of gold hundreds of kilograms. Because of some dog heads, commonly known as dog head gold, Indian scientists have found two nearly 2.5 tons of dog head gold ; Poor ore has industrial mining value at 0.1-1 gram/ton, and has industrial mining value at the current level of high 0.5 grams/ton.
The pure gold in nature is very small, often including silver, copper, iron, 钯, 铋, platinum, nickel, 碲, selenium, 锇 and other accompanimental elements. Natural gold contains 15%of silver in silver More than 20%of copper are called copper gold ore, with 5-11%of 钯钯钯钯钯矿矿钯钯铋铋铋铋铋铋矿矿矿铋铋铋铋矿矿矿矿矿矿矿.
The gold has a parental sulfur, often close to sulfur, such as pyroneite, poison sand, square lead ore, and 锑 ore.
Gold has a parentality. The meteorite contains gold (1150 × 10-12). It is 3 orders of magnitude higher than ordinary rocks.
The gold also has a bronze nature. In the element cycle table, it occupies the edge of the pro -copper and the parent iron element. Chemical behaviors are similar to adjacent elements, showing stronger iron properties. Copper and silver are rich in sulfide; and gold and platinum are mostly concentrated in metal phase. Gold in the earth is 0.8 × 10-6, the nucleus is 2.6 × 10-6, the mantle is 0.005 × 10-6, and the crust is 0.004 × 10-6. The abundance of gold in the crust is only 1/1 million of iron, 1/21 of the silver.
. More than 99 % of the gold on the earth enters the ground nuclear. This distribution of gold is formed in the long -term evolution of the earth. The golden crust formed in the early stages of the earth's development is high. Therefore, it can generally represent the old -fashioned green rock belt composed of early crusts, especially the combination of magnesium iron and ultra -magnesium iron volcanic rock. In various types of rocks in the crust, it may become the earliest "mineral layer" of gold mines.
In all, the abundance value of gold in the crust is already very low, and it has the properties of sulfur, copper nature, parenting, high melting point, etc. Thousands of times, to form a big mine and rich ore, gold must be rich for thousands, tens of thousands, or even higher. It can be seen that its huge gold ore generally experiences a considerable geological period. Mining can only be formed.
The main purpose and function of gold,
. Used as international reserves
． The preservation function
3. Risk aversion function
4. Use as jewelry decoration
5． Application of industrial technology
Gold is a metal found and utilized earlier. Because of its rare, special and precious, it has been regarded as the head of hardware since ancient times. It has the title of "King of Metals" and enjoys the reputation that other metals cannot compare. Its prominent position is almost eternal. Because of the status of gold in this' nobleman, it was a symbol of wealth and luxury for a while. It was used as financial reserves, currencies, jewelry, etc. So far, the application of gold in the above fields still accounts for the main position.

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