Dana on August 6th, 2009

Just in case you didn’t know here are the top 10 gemstones in order of Hardness 1. Diamond 2. Sapphire 3. Ruby 4. Emerald 5. Alexandrite 6. Topaz 7. Spinel 8. Zircon (CZ) 9. Garnet 10.Aquamarine Diamond is the hardest natural element know to man. Even if we know harder materials, they are man made. [...]

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