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Ruby Corundum
An example of the element Aluminum

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Ruby Corundum.
Description from the source:
Corundum var. Ruby (Al2O3 trig.), Mysore, India. Perfect crystal on matrix. 3,2x2,5x2 cm (up to 14 mm the crystal); 20 g.
Source: Simone Citon
Contributor: John Gray
Acquired: 26 September, 2008
Text Updated: 28 September, 2008
Price: Trade
Size: 0.5"
Composition: Al2O3
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