Difference between revisions of "Turquoise"
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(New page: '''Turquoise''' is a mineral used as a gemstone in jewelry. It has a distinctive greenish-blue color with some lighter and darker variations. It was used long ago by the Egyptians and ...) |
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| − | '''Turquoise''' is a [[mineral]] used as a gemstone in jewelry. It has a distinctive greenish-blue color with some lighter and darker variations. It was used long ago by the Egyptians and the Aztecs, who believed turquoise had protective powers, and it is found in [[Native American]] jewelry. | + | '''Turquoise''' is a [[mineral]] used as a gemstone in jewelry. It has a distinctive greenish-blue color with some lighter and darker variations. It was used long ago by the Egyptians and the [[Aztecs]], who believed turquoise had protective powers, and it is found in [[Native American]] jewelry. |
It is a copper aluminum [[phosphate]] with the chemical composition: CuAl<sub>6</sub>(PO<sub>4</sub>)<sub>4</sub>(OH)<sub>8</sub>·4H<sub>2</sub>O. It has a [[hardness]] rating of 5 - 6 on the [[Mohs Hardness Scale|Mohs scale]], and a specific Gravity of around 2.6 - 2.8. | It is a copper aluminum [[phosphate]] with the chemical composition: CuAl<sub>6</sub>(PO<sub>4</sub>)<sub>4</sub>(OH)<sub>8</sub>·4H<sub>2</sub>O. It has a [[hardness]] rating of 5 - 6 on the [[Mohs Hardness Scale|Mohs scale]], and a specific Gravity of around 2.6 - 2.8. | ||
Latest revision as of 22:18, June 7, 2008
Turquoise is a mineral used as a gemstone in jewelry. It has a distinctive greenish-blue color with some lighter and darker variations. It was used long ago by the Egyptians and the Aztecs, who believed turquoise had protective powers, and it is found in Native American jewelry.
It is a copper aluminum phosphate with the chemical composition: CuAl6(PO4)4(OH)8·4H2O. It has a hardness rating of 5 - 6 on the Mohs scale, and a specific Gravity of around 2.6 - 2.8.
Turquoise is the birthstone for December