Pleochroism – andalusite

andalusite

The beauty of andalusite is readily apparent from the image above (note: the cut stone, whilst very neat, is not my work).

The strong yellow, olive, reddish brown pleochroism can be seen fairly well in both the rough and the cut stone. Andalusite is a fairly underrated gemstone in my opinion, it is quite hard at 7.5 on Moh’s scale (good), however it has a distinct cleavage (not good), nevertheless a clean example can cut a great stone.

Andalusite rough, about 40ct total.
Looks good with a black background

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