You will learn about gemstones, and its mineral species, varieties and groups. What are different types of crystals and how it form. Gem deposits and how gem are mined from the earth. Why are gemstones so valuable? What are luster and brilliance? How a gemologist identify natural gemstones using modern gemological equipments like loupe, microscope, refractometer, prism spectroscope, and dichroscope. With the basic understanding of gemological instrument, you can identify some of the gemstones like ruby, sapphire, emerald, topaz, tourmaline, spinel, quartz (amethyst and citrine) and some of the synthetic stone (synthetic ruby made by flame fusion method) and its imitation – doublet and triplet stone. You will learn about treatment of gemstones e.g. heat treatment of gemstones, surface diffusion, oil impregnation of emerald, and laser treatment.
- What are gemstones?
- Mineral species, varieties and groups.
- Type of crystals
- Gemstone of the world
- Why gemstones are valuable?
- Cutting and polishing of gemstone to bring out the lustre and brilliance.
- Phenomenal gemstones – chatoyancy, asterism, play of colour, and colour change effect.
- Lustre and brilliance
- Use of instrument i.e. loupe, microscope, refractometer, prism spectroscope, dichroscope, ultraviolet lighting, etc.
- Identification of ruby, sapphire, emerald, topaz, tourmaline, quartz, spinel, pearl, and imitation like doublet and triplet.
- What is synthetic gemstones and its identification.
- Treatment of gemstones and identification of coating, dyeing, heat treatment, surface diffusion, irradiation and laser treatment.
- Identification of composite stone e.g. doublet and triplet.