Sapphire is a gemstone belonging to the variety of aluminium oxide mineral, corundum. The stone is one of the most popular gems used in jewellery because of its hardness, rating 9 on Moh’s scale, trailing after diamond at 10. Sapphire can have different colour and can also be colourless. But, those with intense blue colour are the most valuable because of its demand in the market.

Celtic sapphire engagement ring

As to its gemmological value, sapphire is considered a precious stone highly valued for its durability, colour and beauty. It is the birthstone associated with September and is used to represent the 45th wedding anniversary, which is also known as the “Sapphire Anniversary.”

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