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This
is a variety of quartz coloured by traces of manganese, titanium and
iron. It is of a pale lilac, mauve or bluish violet colour. Very
popular in the past, its current value is stable as new mines have
recently been discovered. Moreover, its worth has been further
undermined over recent years by the flood of tasteless objects made in
Brazil. |
Name |
Moh's |
Specific Gravity |
Structure |
Cleavage |
Refractive Index |
Double |
Disp. |
Pleochro |
Fluorescence |
| Amethyst Quartz | 7 | 2.63-2.65 | Hexagonal | None | 1.544-1.553 | 0.009 | 0.013 | v Weak | Weak |
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