1.       Gemmology

2.       Mineralogy

3.    Interesting lists

4.   Software
Determination of gemstones : with 6 possible parameters (refractive index, density, birefringence, (an)isotropy with optic sign, colour, transparancy) a list of possible stones (chosen from more than 600 natural stones, synthetic stones and artificial products) is created arranged according to the percentage of match. (Microsoft Office Access file).


Calculation of ny, birefringence and optical sign in biaxial stones
(Microsoft office excel)

                                                  voorbeeld ny

Calculation of doubling of images in gemstones
(Microsoft office Excel)

                                                   voorbeeld doubling