Objective
This course will lead you through the technical aspect of identification of treated jade. Advanced technique like infrared spectroscopy and scanning electron microscope were mentioned but most importantly, you will learn the basic steps using loupe and microscope to identify A-, B-, C-, B+C- and D-jade. On top of these, you will learn how to identify some of the jade imitation like serpentine, quartzite, grossular garnet and also glass. Basic quality grading of jade shall be taught which will give you a better understanding why certain grading method is more suitable for our local market. Trading of jade will also be mentioned.

Outline

1. History of jade
2. Formation, deposits & cutting of jade.
3. Chemical and physical properties of jade: jadeite & nephrite.
4. Particular attention on Jade & its treatments: A, B, C, B+C-jade and D-jade.  Others like coated jade, etc.
5. Use of instrument: loupe, microscope, refractometer, spectroscope, polariscope, specific gravity, Chelsea filter, ultraviolet light and infrared spectroscopy.
6. Identification of other imitations like serpentine, quartzite, grossular garnet & glass.
7. Basic quality grading of jadeite.
8. Practical sessions with jadeite sample for testing.