It is the metal with the highest electrical conductivity (higher than that of copper) and with the improved thermal conductivity. It occurs naturally in the native state that is combined in compounds such as chlorine, arsenic, sulfur and antimony. The amount of silver available on the Earth's crust is 0.0800 ppm (g/ton), more than 20 times that of gold, which is 0.0040 ppm (g/ton).

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Platinum

Gold

Palladium

Almost all world trade is made of gold ingots, weighing about 12.5 kg and with a purity of 99.5%.The unit of exchange is the troy ounces and the carat is used to measure the purity. According to these standards is 24 carat pure gold, +100% ie 24/24. Pure gold is 50% 12/24 or as shown as gold 12 carat gold. The gold is very soft and therefore can not be used in its pure state. It is usually alloyed with other metals: copper, zinc, silver and nickel.

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Palladium

Silver

Platinum

Palladium is a rare metal, resembling platinum, extracted mainly from certain minerals of copper and nickel. It has a white-gray, slightly darker than the platino.Il palladium does not oxidize in air and is highly permeable to hydrogen.

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Gold

Silver

Platinum

Pure platinum is similar to the silver. It is ductile, malleable and corrosion resistant. Possesses remarkable catalytic capabilities (a mixture of hydrogen and oxygen gas explodes in the presence of platinum) and is as strong as the gold corrosion and tarnishing. It is the third element in density after osmium and iridium.

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Palladium

Gold

Silver