wild pearle abalone jewelry wholesale Who invented Platinum?

china wholesale pearl jewelry Platinum is a material that has always existed. If you really want to ask, you should ask who found it!

wholesale jewelry pricing formula In the classification of minerals, the platinum elements are naturally platinum, including four natural element minerals: 铱, 铑, 钯, and platinum. They exist in the same phenomenon of the same phenomenon in each other, thereby forming a series of types of quality of the same elephant mixed crystals. At the same time, the ingredients often include iron, copper, nickel, silver and other elements. When their content is high, they constitute the corresponding species. Platinum elements are alternately shaft -crystal systems, and single crystals are very rare, and occasionally small grains of cube or octopus are produced. Generally, there are irregular granular, branches, grape -shaped or block shapes. The color and strip marks are silver -white to steel gray, metal luster, opaque, no rheology, jagged fracture, extensible, and is a good conductor of electricity and heat. Metals melted by platinum elements include gold, gold, platinum, gold, etc.
1.钯 钯: Mainly melted from nature. Color silver -white, similar to platinum, metal luster. Hardness is 4 ~ 4.5. Relative density 12. The melting point is 1555 ° C. Chemical properties are more stable. Because the output is larger than platinum and gold, the value is low, and it is rarely used to make jewelry.
. Gold: It is mainly refined by nature and is a rare precious metal. The color is silver -white, metallic luster, opaque. Hard 4 ~ 4.5, relative density 12.5. The melting point is high at 1955 ° C. Chemical rewards are stable. Because the golden gold is resistant to corrosion and the gloss is good, it is mainly used for the electroplating industry. It plated it on the surface of other metals.
3.铱 铱: It is mainly refined by nature or ore. The color is silver -white, with strong metal luster, hardness 7. The relative density is 22.40, but it can be pressed into foil or filament at high temperature but it can be pressed into filaments at high temperature. The melting point is high, up to 2454 ° C. Chemical properties are very stable. It is mainly used for manufacturing scientific instruments, hot electric puppets, resistance, and so on. High -hardness and tadpole platinum alloy are often used to make nibs and platinum jewelry.
4. Platinum: It is picked by natural platinum, coarse platinum ore and other minerals. Because "platinum" is combined by the word "gold" and "white", the color is silver -white, so it is also called "platinum". Silver white, metal luster, hardness 4 ~ 4. 5, relative density is 21.45. The melting point is high at 1773 ° C. Rich ductility, can be pulled into a fine platinum silk, rolled into extremely thin platinum foil. The chemical properties are extremely stable, insoluble in strong acid and strong indulgence, without oxidation in the air. It is widely used in jewelry industry and chemical industry, and is used to create high -grade chemical utensils, platinum pots, and catalysts that accelerate chemical reactions.

. The type of platinum
1. Pure platinum: the highest color platinum. Commonly used for making engagement rings to show the pure virginity of love. Many people think that inlaid diamonds with gold may cause diamond yellowing, which greatly reduces the price of diamonds. With platinum inlaid diamonds, the pure white color of diamonds can be kept, especially as an engagement ring. Platinum inlaid diamonds with platinum are both white and crystal. However, although platinum has higher hardness than gold, inlaid diamonds and jewelry are still insufficient. They often need to be mixed with * gold to make * platinum alloy inlaid diamonds.
. Platinum Gold: Alloy composed of 铂 and platinum. The color is also silver -white, with strong metal luster. High hardness. The relative density is also large and chemical, it is an excellent platinum alloy jewelry material. Depending on the content of hinge and platinum, it can generally be divided into three types:
10 % 铱-platinum alloy 21.54 1788 ℃
15 % 铱-platinum alloy 2159 1821
5 % 铱 铱 铱-Clatinomin 21.50 1779 ° C
. K platinum: white alloys made of gold and other metals. Metals such as gold and nickel, silver, copper, zinc and other metals are selected into a white alloy, which is called "K platinum". The color of K platinum is the same as the K gold identification, such as 18K platinum and 14K platinum, of which the gold content is 75 % and 58.5 %.
. Platinum jewelry
human understanding and utilization of platinum people's platinum It is far later than gold, which is only about 2,000 years of history. According to archeological data demonstration, in more than 700 BC, the ancient Egyptians had been able to process platinum as a high level of platinum jewelry. Indians in Central America, before Columbus discovered the New World, also prevailed in platinum accessories. However, people in other regions knew nothing about platinum. Until the beginning of the 16th century, the Spanish colonial empire gradually formed, and a large number of Spanish adventurers poured in Africa and America to explore treasure hunting. At that time, when the river in Ecuador was rushed into gold, it was repeatedly found that a white metal was mixed in gold, which was actually precious platinum. However, due to the underdeveloped science and low recognition ability at that time, facing the silver -shaking platinum, the colonial ruler called it "bad silver" and abandoned it. In 1748, the famous Spanish scientist Antonilia discovered the silver -white natural platinum in the Pingto River Gold Mine. He conducted a careful study and found that the chemical properties of natural platinum were very stable, the ductility was excellent, the melting point was also high, the relative density was relative density Great, it is obviously different from metal silver. Anthony was the first scholar to study platinum in detail. In 1780, a clever craftsman in Paris created platinum rings, brooches and platinum necklaces for the King of Louis XVI in France. As a result, Louis XVI has become the first person in the world to have platinum jewelry. Since then, the reputation of platinum has been rejuvenated, and it has jumped on the gold jewelry and is spoiled by the relatives of the emperor, the noble official, and the wealthy Jia Shang. Because the reserves of platinum in nature are scarce than gold, according to incomplete statistics, the total world platinum storage is about 14,000 tons (the total reserves of platinum elements mineral resources are about 31,000 tons), although more than 60 countries have all countries all all countries are all countries. It was discovered and mined platinum, but its reserves were highly concentrated in South Africa and the former Soviet Union. Among them, the platinum reserves of South Africa (Azania) are about 12,000 tons, and the most famous platinum mines in Teramomi are the largest platinum mines in the world. Natural platinum weighing 8-9 kg was found in the platinum ore, and natural platinum weighing 427.5 grams was also obtained in native abnormalities. The total reserves of the two account for 98 % of the world's total reserves. The annual output of platinum in the world is only 85 tons, which is far less than gold. In addition, it is more difficult for pure melting platinum than gold. Therefore, its price is more expensive than gold. Platinum is elegant and luxurious, symbolizing purity and noble. Therefore, people use it as a token of love and make a engagement ring to show the innocence and forever of love. If the diamond is inlaid on a silver -white platinum support, the crystal diamonds complement each other with the glorious platinum, which sets off the white flawlessness, precious and graceful luxury of the diamond.
four, platinum and similar metal identification
platinum: silver white and strip marks, hardness 4 ~ 4.5, relative density 21.45, stable chemical properties, insoluble in ordinary acids as their identification characteristics It is easy to identify with metal.
The silver and silver distinguishes with relative density, hardness, and stable chemical properties. Although the silver is silver -white, the relative density is 10.53, only 1/2 of the platinum; and the hardness is low and non -elastic. Therefore, it can also be left with a nails. In restoration; plus the chemical properties of silver, the nitric acid will dissolve and release nitric oxide gases. Platinum is insoluble in nitric acid, and it can be dissolved quickly in the heated king water. At normal temperature, its dissolution speed is extremely slow. Generally, it is difficult to detect the naked eye.
Platinum is a good catalyst. Using this feature, you can quickly identify platinum. The commonly used hydrogen peroxide reaction method. The specific method is: take a little measuring powder, and place it in a plastic bottle in a bilingual hydrogen peroxide (H2O2). Move one and recycle (it only plays a accelerated decomposition); the bitter is other white metals, such as lead, silver, aluminum, etc. There is no such response.