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| September--the Sapphire | ||||||||||||
| Al2O3 | ||||||||||||
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| The sappire is a corundum, like the ruby. It has a hardness of 9. A small amount of iron oxide of titanium oxide caused the blue color. However, a sappire is a corundum that is any color but red. It has a trigonal crystal system. A sapphire has a specific gravity of 3.95. Its streak is uncolored. The ancient Perisians believed the Earth was suspended in a giant sapphire. | ||||||||||||
| www.trigemdesigns.com/gems | ||||||||||||
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