Correspondence Diploma in Gemology

Institute regularly conducts a full time intensive gemmology diploma programme. This has been developed to help jewellers retailers, diamond and gemstone dealers and new comers.Incharge of the course is Dr. Jayshree Panjikar.

COURSE CONTENT
1. Introduction of gems :
a. Basic qualities; b. Chemical composition; c. Weights and Measures.

2. Chemical Composition

3. Crystallography of gemstones Nature of Crystals: Systems of Crystallography; Crystalline and non Crystalline Materials; Forms; Habit; Twinning.

4. Physical Properties :
a. Hardness b. Cleavage c. SG

5. Optical properties : a. Colour; b. Transparency; c. Visible Spectrum; d. Light Reflection; e. Total Internal Reflection; Single and Double Refraction; f. Dispersion; g. Polarization; h. Refractive index and its determination by Refractometer; Reflectivity; Reflectometer.

6. Causes of colour in gemstones : Pleochroism; Interference; Lustre; Sheen; Opalescence; Adularescence; Irridescence; Asterism; Chatoyancy.

7. Use of instruments such as : Jeweller's Lens; Microscope; Spectroscope; Dichroscope; Chelsea Colour Filter; Ultraviolet light; Polariscope; Refractometer.

8. Differentiating Natural Gemstones From Its Synthetics And Simulants Different Types of Synthetics & Its Identification

9. Description of Gem Stones : The varieties and colours, species, chemical composition and crystal systems, physical properties etc

11. Identification of treated gemstones

12. Identification of various inclusions in gemstones by occurrences

13. Marketing aspects of gemstones & export procedures : a. Gem & Jewellery Industry An Overview, Analysis Of Prospects And Problems Of the Industry b. Sectors Such As Precious / Semi Precious, Diamonds, Pearls, Synthetic, Imitation, Jewellery c. Studded and Plain Gold and Formalities.

14. Fashioning of Gemstones a. Procedures, Processes and Equipment Used In Cutting of Diamonds and Other Stones. b. Different Styles of Cutting. Grading Gemstones for Quality of Cutting.

15. Electrical and Magnetic properties of gemstones, conductometer.

16. Thermal conductivity and Thermal probes.

17. Practicals :- Observation of external features (cut, colour, fractures, etc.) of a gemstone using a "10x lens;- Observation of external symmetry, surface marks and cleavage of various crystals and their identification;- Determination of hardness on Moh's Scale using hardness pencils and hardness plates;-