Monday, 18 April 2011

Rainbow fluorite ~

Fluorite occurs in many colours.  The selection of beads shown here is termed rainbow fluorite due to the range included.  It would more accurately be applied to a single specimen which includes the range from purple through blue to green, the same range that you see here.

Fluorite has a reputation for brittleness so needs to be handled and stored with care.

The term 'fluorescence' takes its name from fluorite due to the light many samples emit when placed in ultra violet light.  It must be added that this property is shared by a number of other minerals.

This mineral has a number of industrial uses, one of which is in the manufacture of lenses.  These have been used in some telescopes and cameras.

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