Wednesday, July 22, 2015

Interesting Gold Fact


The purity of gold is measured in carats. The word comes from the Greek keration, the carob tree. A member of the pea family with horn-shaped pods (keras means “horn”), its seeds were believed all to be the same weight, making them a handy standard for measurement. A pure gold coin was defined as weighing the same as 24 carob seeds, so “24 carat” became the measure of 100 per cent purity for gold, 99-99.9 per cent in actual fact. Gold deemed “18 carat” is around 75 per cent pure.

“Gold” is descended from the Prot-Indo-European root ghel- meaning “yellow” or “bright” and its chemical symbol Au comes from the Latin aurum, which also means “dawn light”.


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