Instrument used for gem identification

Instrument used for gem identification

1. Microscope and 10z loupe
2. Refractor meter is used for finding refactrative index of the stone.
3. Dichroscope is used for finding out the properties of trichroism, diachronic and pleochroism.
4. Spectroscope is used or finding out the wave.
5. Ultra violet lamp is to detect the fluorescence and phosphorescence.
6. Choelsea filter is a dichromatic filter, which transmits Z wave’s lengths.

Moth’s scale

The hardness of stones is measured by the scale is called Mohs’ scale, named after Friedrich Mohe, a German mineralogist (1773- 1839.)If is based on the ability of one stone to be scratched by another, or to itself be scratched.

Scale

Category Family name
1. Talc
2. Gypsum
3. Calcite
4. Fluorite
5. Apatite
6. Orthoclase
7. Quartz
8. Topaz
9. Corundum
10. Diamond