Precious Metals Magazine
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Precious Metal Determinants: Rarity And High Economic Value
A metal is considered "precious" if it is rare and is of high economic value. Under these two factors, nine metallic chemical elements qualify as precious metals. These are, in no particular order, gold, palladium, silver, rhodium, iridium, ruthenium, platinum, osmium, and rhenium.
The Six Precious Metals Of The Platinum Group
In the periodic table of elements, six metallic elements are bunched together in the d-block, specifically in groups 8 to 9, periods 5 and 6. All transition metals, these six elements are collectively referred to as the "platinum group metals". These precious metals tend to occur with one another in mineral deposits. Likewise, they are alike in both chemical and physical properties.
Ruthenium: Most Versatile Of The Platinum Group Metals
Arranged by name alphabetically, ruthenium is the last of six metallic elements in the platinum group. This precious metal is characterized as being both polyvalent and versatile. In fact, it is known to be more versatile than any of the other five precious metals in the platinum group.