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The '''sapphire''' is one of the 4 "[[precious stone]]s" (along with [[diamond]], [[emerald]], and [[ruby]]) that are considered among the most valuable of [[gemstone]]s. Sapphires are found in shades of blue. Many are transparent. Many sapphires come from [[India]], as well as [[Thailand]], [[Sri Lanka]], and [[Myanmar]]. They are also found in parts of [[Australia]], and a variety with a distinct color have been found in [[Montana]], in the United States. The sapphire is the [[birthstone]] for [[September]]. Interestingly, both sapphire and ruby are the same material, [[corundum]], (an aluminum oxide, Al2O3).<ref>[http://www.emporia.edu/earthsci/amber/go340/corundum.htm Emporia.edu]</ref>

The '''sapphire''' is a [[precious stone]] that is considered among the most valuable of [[gemstone]]s. Sapphires are found in shades of blue, purple, and green. Many are transparent. Most of the highest quality sapphires come from [[India]], as well as [[Thailand]], [[Sri Lanka]], and [[Myanmar]]. They are also found in parts of [[Australia]], and a variety with a distinct color have been found in [[Montana]], in the [[United States]].

 

The sapphire is the [[birthstone]] for [[September]]. Interestingly, both sapphire and ruby are the same material, [[corundum]], (an aluminum oxide, Al2O3).<ref>[http://www.emporia.edu/earthsci/amber/go340/corundum.htm Emporia.edu]</ref>

 

The largest sapphire in the world is the Millennium Sapphire, weighing over 61,500 [[carats]] (over 27 [[pounds]]), and is valued beyond tens of millions of dollars.<ref>http://www.millenniumsapphire.com/pages/story.html</ref>

==References==

==References==