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Gemstone Examination Lesson

Step 3: Practical Gemology Lesson 28 Back to syllabus While preparing this lesson in gemstone examination, I was in the process of professionally…

The Dichroscope

A dichroscope is one of the most useful instruments a gemologist can have. Its primary purpose is to determine the pleochroism of a gem. This can…

The Spectroscope in Gemology

Step 3: Practical Gemology Lesson 3 Back to syllabus Sometimes, refractive index (RI) and specific gravity (SG) readings aren’t enough…