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