Timeline for Would earthlike planets in other solar systems have well-known Earth gemstones such as rubies, emeralds and sapphires?
Current License: CC BY-SA 3.0
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| when toggle format | what | by | license | comment | |
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| Apr 4, 2018 at 19:34 | history | edited | lvella | CC BY-SA 3.0 |
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| Apr 3, 2018 at 1:43 | history | answered | lvella | CC BY-SA 3.0 |