Birthstone Gems

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December Birthstone - Turquoise

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Turquoise fact file

Crystal Structure: minute triclinic crystals
Chemical Composition: hydrous phosphate of aluminum and copper CuO.3Al2O3.2P2O5.9H2O
Hardness: 5-6 MOHS

Refractive Index: 1.61 to 1.65
Colors: Opaque, dark to light blue, different ranges of green

Those born in December have the maximum choice. They can choose from three december birthstones - Turquoise, Lapis Lazuli, Blue Zircon

Name

The term turquoise is probably derived from the French turquois (Turkish stone). The name appears both with a final "e" (turquoise) and without the final "e" (turquois).

Related Pages:

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