NOVA Online | The Diamond Deception | A Primer of Gemstones - 0 views
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Liberty High School on 24 Sep 10A Primer of Gemstones Where do diamonds fit into the pantheon of gems? Here, we present 20 of the world's most prized gemstones, together with the properties that experts use to distinguish them from one another and from artificial lookalikes. Click on the gems at left and become, for the moment, a gemologist.