![]() Good quality blue sapphires are rare and very precious and therefore have many imitations. Royal blue sapphires are most desired and valuable. The amount of titanium in the aluminium oxide plays a key role in determining the blue color of sapphires. Sapphires derive their color from trace elements of iron and titanium oxide. Sapphires are made of aluminium oxide, which is colorless in its pure form. Another theory suggests it is from the Sanskrit “sauriratna” in honor of the planet Saturn. One theory suggests it is from the Greek “sappheiros” meaning “blue stone,” although it is widely believed not to refer to the same stone. ![]() There are several theories as to the origin of the name. An aluminum oxide sapphire has a special feature – in its pure state it is completely colorless. ![]() High-quality sapphires are rare and very expensive, and as such this gem has many imitations. Sapphire, a blue gemstone, is September’s birthstone. ![]()
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