So, which is the best gemological microscope in the market?
For routine gemological observations magnifications to 30X are sufficient, but higher magnifications to 60X+ are occasionally required. The eyetubes should be horizontally adjustable, preferably with diopter adjustment. Zoom type pod is preferred, but fixed type may be used. Working distance (between the microscope and the gem) should be minimum 80-85mm, so the user can manipulate the gem comfortably. Brand name microscopes are available at hefty prices, but the latest models made by high-end Chinese microscope makers meet the requirements for gemological applications at reasonable prices.

Nearly all microscopes provide coarse focusable rack-and-pinion mechanism, but dual (coarse and fine) is highly desirable because the gem can be easier focused at high magnifications. Inclined (tilted) gemological base is often desirable, but the rotating feature is not necessary. In all cases, the tilted mechanism eventually wears out and must be re-tighten.

Lighting conditions where the gem is observed is of paramount importance. Successful microscopic observations depend on the proper positioning the gem under suitable lighting environment, something that cannot be taught, but gained only by experience. A combination of dark-field effect and incident pinpoint lighting provide great flexibility in illuminating the stone. The recommended lamp type should be LED because is heatless, has long-life expectancy and emits white light at specific color temperature.

Wire tweezers are widely used where the stone is held between the wires, but often the wires are misaligned and the gem cannot be held securely. For endless manipulation and positioning the gem, magnetic ball base mechanism is desirable feature.

Pilot lights, proper light dimmers and other features are equally important and depend on the design and quality of the parts used in fabricating the microscope.

Learn more.. I strongly advise you to read below the various topics on microscopes. Then you can make your own decision, but I believe that I have fabricated the best microscopes in the market that comply with all above requirements at a reasonable price. I predict that other microscope makers will copy my innovative ideas, but that's is expected. If you have any questions please do not hesitate to contact me ted@themelis.com.

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