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Today, this miracle is glimpsed in the hue, tone, saturation, inclusions, character and clarity of every gemstone. Skilled lapidaries carve elegant shapes, adding magic to inspire jeweller’s delicate designs. In choosing coloured gemstones, you are choosing to fall in love with millions of years of the Earth’s history and thousands of hours of skilled work.

Key areas of exposure:

  1. Introduction to synthetic and treated gems identification system. Basic qualities; Chemical composition; Weights and measures.
  2. Physical properties: Hardness; Cleavage; Special Gr
  3. Optical properties : Colour; Transparency; Visible Spectrum; Light Reflection; Total Internal Reflection; Single and Double Refraction; Dispersion; Polarization; Refractive index and its determination by Refractometer; Reflectivity; Reflectometers.
  4. Colour and causes of colour: Pleochroism; Interference; Lustre; Sheen; Opalescence; Adularescence; Iridescence; Asterism.
  5. Synthetics, composites and imitation gemstones and plastics: Different methods of manufacture; Characteristics; Identification.
  6. Fashioning Of Gemstones: Procedures, processes and equipment used in cutting of diamonds and other stones. Different styles of cutting. Grading gemstones for quality of cutting.
  7. Treatment of Gemstones: Dyeing, Coating, Heat Treatment, Irradiation, Waxing, fracture filling, oiling, laser drilling, HPHT, diffusion, mass diffusion, graphitisation, composite stones, glass filling.
  8. Thermal conductivity and Thermal probes.
  9. Marketing aspects : Gem & Jewellery industry an overview, analysis of prospects and problems of various sectors such as precious/semi precious, diamonds, pearls, synthetic, imitation, jewellery studded and plain gold.
  10. Export procedures and formalities.