Nákupní košík je prázdný

Total price: 0 CZK
Continue shopping

Platinum

Platinum, is a chemical element with symbol Pt. It is a dense, malleable, ductile, highly unreactive, precious, silver-white metal. Its name is derived from the Spanish term platino, which is literally translated into "little silver".

Platinum is a member of the platinum group of elements and group 10 of the periodic table of elements. It has six naturally occurring isotopes. It is one of the rares elements in Earth´s crust with an average abundance of approximately 5 μg/kg. It occurs in some nickel and copper ores along with some native deposits, mostly in South Africa, which accounts for 80% of the world production. Because of its scarcity in Earth's crust, only a few hundred tonnes are produced annually, and given its important uses, it is highly valuable and is a majo precious metal commodity.

Platinum is the least reactive metal. It has remarkable resistance to corrosion, even at high temperatures, and is therefore considered a noble metal. Consequently, platinum is often found chemically uncombined as native platinum. Because it occurs naturally in the alluvial sands of various rivers, it was first used by pre-Columbian South American natives to produce artifacts. It was referenced in European writings as early as 16th century, but it was not until Antonio de Ulloa published a report on a new metal of Colombian origin in 1748 that it became investigated by scientists.

Platinum is used in catalytic converters, laboratory equipment, electrical contacts and electrodes, platinum resistance thermometers, dentistry equipment, and jewellery. Being a heavy metal, it leads to health issues upon exposure to its salts, but due to its corrosion resistance, it is not as toxic as some metals. Compounds containing platinum, such as cisplatin, osyplatin and carboplatin, are applied in chemotherapy against certain types of cancer.

Pure platinum is a lustrous, ductile, and malleable, silver-white metal. Platinum is more ductine than gold, silver or cooper, thus being the most ductile of pure metals, but it is less malleable than gold. The metal has excellent resistance to corrosion, is stable at high temperatures and has stable electrical properties. Platinum reacts with oxygen slowly at very high temperatures.

Its physical characteristics and chemical stability make it useful for industrial applications. Its resistance to wear and tarnish is well suited to use in fine jewelry.

 

Current Platinum Price


Zdroj: www.kitco.com

Unique Diamond Mine: All You Find, It Is Yours

30. 8. 2016

There is an only diamond mine in American state Arkansas which is open to the public.

Lesedi La Rona Insured for $120M

30. 6. 2016

Lesedi La Rona Insured for $120M

ALROSA Finds Largest Diamond in Zarnitsa's History

30. 5. 2016

ALROSA discovered a 207.29-carat rough diamond at its Zarnitsa mine in the Russian republic of Yakutia.