The best way to examine a gemstone is by using a microscope.
The microscope provides better magnification, illumination, and mechanical stability. It consists of a set of eyepieces, viewing tube, objectives, coarse and fine adjustments, a stage with built-in illumination (i.e Reflected light / Darkfield illumination). It is an essential tool for the gemologist especially in the identification of synthetics.
- Detection of synthetics and imitations.
- Study inclusions to assist in determining the identity or place of origin.
- Detect double refraction (i.e Zircon or Peridot)
- Detect composite or assembled stones.
- Diamond or Colored Stone clarity grading.
- Proportion grading for both Diamonds and Colored Stones.
- Becke line method of R.I. determination.
- The direct method of R.I. determination when fitted with a calibrated scale.
- Study interference figures to determine whether it is uniaxial or biaxial when fitted with a polarizer/analyzer.