wholesale gemstone jewelry cheap Gold's physical properties and chemical properties.

how to set wholesale prices for jewelry The basic physical and chemical properties of gold
In the Menjiev cycle table; the golden order of the gold is 79. That is to say, there are 79 negative rotating electrons around the nucleus of the golden atomic nucleus. The neighbors in front of the gold are:, aluminum; platinum; the back is: mercury, 铊, lead. Gold and 铑, 钯, 锇, 锇, 铱, and platinum have good chemical stability, so they are called precious metals. When it comes to Jin, it is best to talk about its nature first, and then talk about how humans use these properties. Interestingly, when people identify gold, the most commonly used words are "very", not the word "most". This is because the purity of gold is impossible to reach the "most" level.
gold is heavy, but platinum is heavier. The density of gold is 19.32 grams / cm ', that is, the weight of only 46 mm in diameter is 1 kg. This refers to the density of chemical pure gold, and such pure gold in nature does not exist to some extent. Gold's "natural" density is related to impurities. It can be from 15 to 16 grams / cm 'to 18-19 grams / cm. Essence The glass bottle with a volume of 1 liter is filled with gold ore, and its weight is about 16 kg. The weight of gold is very beneficial to its mining. In the simplest method, if you use a slot to wash, you can get a high recovery rate. The heaviest metals are arranged according to its density (gram / cm.) As follows: platinum 21.6, gold 19.3, mercury 13.6, lead 11.4, silver 10.5.
Gold is a very soft metal, but it is not the softest metal, because lead and tin are softer. Use nails on pure gold to draw traces. This softness makes gold very easy to process. However, this is very unsatisfactory for the owner of the decoration, because it is easy to cause the decoration to hurt, 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.
Golds are easy to wear and become extremely fine powder, so gold is often widely distributed in nature in the state. Around the venue of processing and processing gold, a layer of extremely thin gold powder is often scattered. Some people with intentional people have made a fortune.
Golden forging and extension, of course, are related to its softness; the forgitivity and ductility of gold are usually inspected separately. The degree of processing of gold in these two 'performances even surprised people with very insidious people. Gold can be crushed into thickness only; micron (0.001 mm transparent and transparent green gold foil. 0.5 grams of gold can be pulled into 160 meters long gold silk, one kilogram of gold foil can spread 530 meters.
gold is hot. The good conductor of He Dian, 'or a very good conductor, but not the best conductor. This kind of gold is not as good as platinum, mercury, lead, and silver. There is a high volatility, and as the temperature increases, its developmentability is continuously enhanced.
The pressure -resistant strength of pure gold is 10kg / m square. 10-30kg / m ㎡. When the cold is pulled, the strongest force.
has a very beautiful grass -yellow metal luster. It can be said that gold is the yellowest in all metals. Family mistakenly believes that gold and sulfur belong to the same type of minerals. Instead of seeing pure gold in nature, metal impurities (first of all copper and silver) give gold and tones from pale yellow to bright yellow and red. Gold color color. It also depends on the thickness of the metal block and its gathering collective state. For example, the thin gold foil is green to the bright place, and the melted gold is also this color. Fine -grained scattered gold is generally dark red or dark purple. The color of gold, when talking about the use of gold, we also have to talk about it.
natural gold sometimes covered with an iron oxide film. In the case, the color of gold may be brown, dark brown, and even black. Mining such gold is sometimes difficult to distinguish between the surrounding pulse stones, so it is necessary to distinguish it very carefully to avoid the loss of gold. There is a parcel layer for planting gold. This kind of parcel layer is not just an iron oxide. Sometimes, it may be some fine grain veins attached to the surface of gold. The identification of gold, and it is also more difficult to deal with the treatment of minerals (mercury mixed with mercury or cyanide), so miners who do not like to deal with this type of gold.
Alloy, golden alloy, and other metal alloys are not compounds, but fixed melts. The reason for many metals to form alloys with gold is that the atomic radius of these metals is very close to the atomic radius of gold; the radius of the atomic radius of gold is equal to 1.46 Emm; Follow like iron, slender gold grains can be melted into gold blocks.
Gold powder must add pressure to melt together when the temperature is low. It can reduce its melting point, and it can also change the mechanical properties of gold itself, including silver and copper can significantly improve the hardness of gold; jewelry craftsmen have widely used this feature. Make gold crisp; lead in this area is even more prominent. The lead containing only 1 % of the alloy, if it is stamped, it will become a broken block. Pure gold contains O.01 % lead. Forging will Lost completely.

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