This course is conducted for those who wish to enter the gem business.
Classes are conducted individually for best results. The sections
covered are as follows:
- Characteristic features of
gem crystals
- Identification: without and
with instruments
- Chemical composition of gem
materials
- Lustre and other surface
properties
- Refractive index and the
refractometer
- Absorption spectrum and the
spectroscope
- Specific gravity and heavy
liquids
- Hardness and abrasives
- Polarized light and the
polariscope
- Pleochroism and the
dichroscope
- Chelsea colour filter
- Luminescence and UV lamps
- Lenses and the microscope
- Geuda and principles of heat
treatment
- Principles of gem-cutting
- Grading criteria
- Price structure of gems
- Rules, regulations and
procedures applicable to gem business
Gemstones used in lessons are valuable gems that are actually for sale
in our showroom.
Duration: to hours, individual classes.
