Birthstone Gems

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September Birthstone - Sapphire

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Sapphire fact file

Crystal Structure: hexagonal
Chemical Composition: Corundum ( Aluminum oxide- Al203 )
Hardness: 9 MOHS

Refractive Index: 1.762 to 1.77
Colors: yellow, green, pink, clear, and blue

Sapphire, the symbol of truth, is the September birthstone. This blue, celestial gemstone is the chemical cousin of ruby, having the same chemical composition - corundum.

Star sapphires and rubies display a six-ray star that moves across the face of the gems when light hits the stones. The star is created by intersecting lines of the mineral rutile that form symmetrically in the gem.

Name

The name sapphire derives from the Latin form of the Greek word for blue, sapphirus.

Related Pages:

Sapphire Properties
Know more about the physical and chemical properties of Sapphire such as composition, color etc.
Sapphire History and Geography
Some interesting facts about Sapphire such as where it is found, stories from history and mythology, and its healing properties.
Buying and Caring for Sapphire Jewelry
Tips for Buying Sapphire Jewelry and taking care of Sapphire Jewelry