Lesson 2: The Microscope: A Guide for Gemologists


Step 3: Practical Gemology

Lesson 2

Sometimes, microscopic inclusions and color banding are the only way to distinguish natural from synthetic gems. This makes the microscope an essential lab instrument for gemologists trying to identify gemstones.

While you only need a 10X loupe for gem grading, a microscope will give you a larger field of view and a brighter image. It will also show alterations like fillings, dye concentrations, assembled stones, and diffusion treatments. Many gemologists use their microscopes for taking photographs for their appraisals. It’s also a useful sales tool. For example, you can show customers identifying features or why the prongs on a jewelry piece need replacing. In addition, seeing a gem under magnification is impressive. Gemstone photomicrography can produce fantastic images.

How Much Magnification do you Need?

You can identify most gems with just 40 power. However, …

Every Gemstone Is Unique - Here's How The Experts Evaluate Them

in this training-course, discover the tools, tests & valuation process used by expert gemologists for colored gemstones, opals & diamonds

Course: Hands-On Gemology: Gemstone Identification Grading & Testing
Purchase Course: $79.00
Skill Level: Intermediate - Advanced
Lessons: 60
Time: 480 min