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Detector Maps GIF

"chemical composition of gemstones"

Prospecting Australia

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Even the chart is pretty. It would be nice to have a chart like that that shows their light deflection angle in degrees as well, maybe organised from slightest to greatest !
 
Looks good, is there a way to breakdown/test some gems to get chemical comp or is this just for the higher end labs and so on ?

Hardness I understand.
 


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