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Precious Stone

Gemstones were first classified into the categories of precious stones and semi-precious stones in the mid-1800s. As far as a precise definition of precious and semi-precious stones is concerned, there is none.

Diamonds, rubies, sapphires and emeralds are four of the most valuable and sought-after gemstones in the world. For anyone looking to purchase an outstanding engagement ring with an impressive gemstone here are some interesting facts and features of these four sparkling beauties.