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Geological Timeline

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I would like your help please. I recently bought some rubies from India and I will be displaying them at an educational center. Could you give me an estimate as to how old they are? I know this might be difficult to assign a specific geological timeline. However, if you could give me an idea of what it would be safe to say would be great, which I will put on the educational card I place next to it. The exhibition will be mainly for the school children of the county. They are large Hex Ruby - Natural Shape, and if you are able to access the photo, it is: http://www.ebay.com/itm/181034516242 Thank you, Lewis Hales, M.A., M.A./CEO

asked Jul 17, 2013 by Lewis (120 points)

1 Answer

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I tried looking this up but didnt find much about it. I believe the Indian rubies are in metamorphic schist, which may possibly lend to their time period formation, though I have not verified this.

answered Jul 19, 2013 by hershel (46,460 points)

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