Platinum name is derived from the Spanish term platina, which is literally translated into little silver. The first European reference to platinum appears in 1557 in the writings of the Italian humanist Julius Caesar Scaliger as a description of an unknown noble metal found between Darién and Mexico, which no fire nor any Spanish artifice has yet been able to liquefy.
Platinum is used in catalytic converters, laboratory equipment, electrical contacts and electrodes, platinum resistance thermometers, dentistry equipment, and jewelry.
Rarity: 5 ppb

Gold, since long before the beginning of recorded history, has been a valuable and highly sought-after precious metal for coinage, jewelry and other arts.
Gold finds its uses in Monetary exchange; Investment; Jewelry; Medicine; Food and drink; Industry; Electronics; Commercial chemistry.
Rarity: 4 ppb

Silver has been known since ancient times. The chemical symbol Ag is from the Latin for silver, argentum, from the Indo-European root *arg- meaning white or shining.
Silver is used for investment, to make ornaments, jewelry, high-value tableware, utensils, currency coins, electrical contacts and conductors, in mirrors and in catalysis of chemical reactions.
Rarity: 75 ppb