Platinum, (Platinum, referred to as Pt), is a natural white precious metals, only platinum can be called platinum, platinum purity can usually reach 95%, platinum mining is only one-tenth of gold, this Persistent and elegant white light, that is why it is called the king of precious metals, and was chosen as a wedding ring reason. Platinum case
Platinum, pure platinum is silver white; with metallic luster, platinum color and luster is natural and natural, lasting unchanged, hardness of 4 to 4.5 degrees, ductility, can be pulled into a very fine platinum wire, rolled into pole Thin platinum foil; strength and toughness, are also much higher than other precious metals, platinum can be divided into pure platinum, iridium platinum and K platinum, the state only platinum content of 85% and above jewelry Cartier love bracelet replica can be called platinum jewelry , And must have a Pt mark.
A brief history of the development of platinum
In 700 years BC, the ancient Egyptians have been able to handle platinum into a higher level of platinum jewelry. Central American Indians, long before Columbus discovered the new continent, also popular platinum ornaments. Until the beginning of the sixteenth century, the Spanish colonial empire gradually formed, a large number of Spanish adventurers flocked to Africa and the Americas to explore gold treasure hunt. At that time, in the river of Ecuador gold rush, repeatedly found a white metal mixed in gold, in fact, is precious platinum.
In 1748, the famous Spanish scientist Anthony Loya, in the Pinto River gold found in the silver white natural platinum. He conducted a careful study and found that the chemical properties of natural platinum is very stable, excellent ductility, melting point is also high, the relative density of great, and metal silver is significantly different. So Anthony became the first scholar to study platinum in detail.
In 1780, a French craftsman, for the French Louis XVI king and queen made a platinum ring, brooch and platinum necklace. So, Louis XVI couples become the world’s first record since the owner of platinum jewelry. Since then, platinum reputation soared, jumped on top of the gold jewelry, for the royal family, dignitaries, wealthy Jia business favored.
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The characteristics of platinum
Platinum group elements include platinum, palladium, rhodium, ruthenium, iridium and osmium these six kinds of metal elements. In nature, they often produce together, and gold, silver together known as precious metals. In the mineral classification, the platinum group elements are natural platinum subfamilies, including
Iridium, rhodium, palladium and platinum natural elemental minerals. Platinum group elements are equiaxed crystal system, single crystal is rare, occasionally cube or octahedral fine grain output. Generally irregular grain, dendritic, grape-like or massive aggregates. Color and stripes are silver to steel gray; metallic luster, opaque. Jagged fracture, with ductility. A good conductor for electricity and heat.
Platinum group metal color beautiful; ductility strong; resistance to melting, friction, corrosion resistance; chemical stability at high temperatures. Therefore, they have a wide range of uses. In the platinum group metals, people are most familiar with, the most used is platinum. It is more scarce Cartier love ring replica and expensive than gold, silver, etc. in precious metals. Pure platinum is silver and white; with metallic luster.
Platinum strength and toughness are also much higher than other precious metals. 1 gram of platinum even pulled into a 1.6 km long filament, it will not break. Melting point up to 1773 ℃. Thermal conductivity is good. Chemical properties are extremely stable, insoluble in strong acid and alkali, in the air is not oxidized. Platinum does not absorb mercury, and has a unique catalytic effect.
The type of platinum
Refers to the platinum or fineness of the highest platinum. Its white luster naturally natural, will not fade, can match any type of skin. Its strength is twice that of gold. Its toughness is better than the general precious metals.
Refers to an alloy composed of iridium and platinum. Its color is also silver-white; with strong metallic luster; higher hardness; relatively large density; chemical stability. It is the best platinum alloy jewelry material.
As the hardness of platinum is too large, so the production of jewelry, in order to properly reduce the hardness, need to be mixed with other metal alloy. In order to reduce the cost of platinum jewelry, but also often mixed with other metal alloy. Therefore, in the jewelry market there have been K platinum. Moreover, people give the different meaning of K platinum.
Platinum is a chemically stable chemical element, pure platinum jewelry in normal life, even in the Cartier nail bracelet replica acid vapor environment to wear, it will not be corroded or discolored. And platinum jewelry hardness is relatively large, is twice the gold, but when wearing platinum jewelry or should pay attention to the following questions:
First, in daily life, do not put platinum rings and gold rings on the adjacent fingers, because the friction between the gold powder will be attached to the platinum surface, so that the platinum ring local yellow.
Second, the chemical properties of palladium is not as stable as platinum, easier to oxidize. When wearing low-platinum (less than 75% platinum) jewelry with palladium content, it is best not to be in direct contact with acid and various cosmetics. Should immediately rinse with water to prevent discoloration.
Third, in order to avoid deformation of the platinum ring, in the handling of heavy objects is best not to wear.
Fourth, if the platinum jewelry for a long time, the surface becomes dark or local discoloration, you can polish. The specific method is: the toothpaste squeezed on the towel, hand holding platinum jewelry on its back and forth friction, rub to the surface fine lines and dirt, with diluted detergent after cleaning, and then rinse with water, color You can recover.