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Platinum

Platinum is a silver-white metal – it was once known as “white gold.” It is known as a “noble metal” because it is resistant to tarnishing and corrosion; it is very soft and malleable, making it easy to shape; ductile, making it easy to stretch into wire; and unreactive, which means it doesn’t oxidise. Platinum, iridium, osmium, palladium, ruthenium, and rhodium are all members of the same group of metals (called the platinum metals) and share similar properties.

Platinum, iridium, osmium, palladium, ruthenium, and rhodium are all members of the same group of metals (called the platinum metals) and share similar properties. Platinum is a silver-white metal — it was once known as "white gold." It is known as a "noble metal" because it is resistant to tarnishing and corrosion; is very soft and malleable, making it easy to shape; ductile, making it easy to stretch into wire; and unreactive, which means it doesn't oxidise. In ancient times, people in Egypt and the Americas used platinum for jewellery and decorative pieces, often times mixed with gold. The first recorded reference to platinum was in 1557 when Julius Scaliger, an Italian physician, described a metal found in Central America that wouldn't melt and called it "platina," meaning "little silver."

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