Microscopic Analysis

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, stage with built in illumination (i.e Reflected light / Darkfield illumination). It is an essential tool for the gemmologist especially in the identification of synthetics.

Gemmological Applications:

1. Detection of synthetics and imitations.
2. Study inclusions to assist in determining identity or place of origin.
3. Detect double refraction (i.e Zircon or Peridot)
4. Detect composite or assembled stones.
5. Diamond or Coloured Stone clarity grading.
6. Proportion grading for both Diamonds and Coloured Stones.
7. Becke line method of R.I. determination.
8. 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.