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Gemologists use microscopes to identify gemstones and detect treatments by revealing inclusions within specimens. Many telltale inclusions are microscopic. Some, like the 30-million year old ants in this piece of amber, are not. However, microscopes still allow viewers, whether professional gemologists, gem enthusiasts, or customers, to appreciate the inner world of gems. “Orange Amber Ants” by Michael Rhys. Licensed under CC By 2.0.