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Glittering
Stones >> Precious
Stones >> Ruby
Precious Stone Ruby
A Ruby is a red variety of the gemstone corundum.
The color is caused mainly by chromium. They are mined in countries
like Africa, Asia and Australia. Rubies are most often found in
Myanmar, Sri Lanka and also at Thailand, though they have also
been found in Montana and South Carolina; rubies are exceptionally
rare, though artificial ones could be manufactured. Sometimes
spinals are found along with rubies in the same geological formations
and usually are mistaken for the more valuable gem.
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Historical Facts of Ruby
| Refractive index |
1.762 - 1.770 |
| Mohs Scale hardness |
9.0 |
| Chemical Composition |
AL2O3 |
| Crystal Group |
Hexagonal |
| Crystal system |
Trigonal |
| Density |
4.0 |
| Luster |
Vitreous |
| Sign of the Zodiac |
Leo |
| Month of the year |
July |
| Planet |
Sun |
| Color |
Red, may be brownish or purplish |
| Occurrence |
Myanmar, Thailand, Sri Lanka, U.S. states of Montana,
Madagascar, North Carolina, South Carolina, Cambodia, Tanzania, Kenya
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Precious Stone Ruby Jewelry
| Ruby Bracelet |
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| Ruby Earrings |
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| Ruby Necklace |
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| Ruby Rings |
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