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- Gemstone (7411 bytes)
1: ...pis lazuli]]) or [[Petrification|petrified]] material that when cut or faceted and polished is [[colle...
5: ...he form the gem is usually found in, for example diamonds which have a cubic crystal system are often ...
11: Certain material or flaws within a stone may be present as charac...
14: ...ed. However, it is important to understand that diamonds are far from rare with millions of carats mi...
16: ...e types of gemstones were considered precious: [[diamond]], [[ruby]], [[sapphire]], [[emerald]], and [...
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