18MA38 Grandidierite
Tranomaro Commune, Amboasary District, Anosy Region, Tuléar Province, Madagascar
4.5x 1.4x 1.3 cm
$465

A good example of grandidierite, this one is a cluster of prisms that show good crystal faces, though are not terminated.  

In 2016 there was a rather spectacular find of this very rare blue-green borosilicate mineral in southern Madagascar.  I has seen some available on my previous trip, but the quality was horrible-- they were basically formless shards, and few if any had crystal faces.

There was a little bit more available this time around, but once again, the majority were shards.  Still, I looked through them and was able to obtain a small number of pieces that had visible crystal faces.









Similar Minerals

18MA04 Grandidierite
Tranomaro Commune, Amboasary District, Anosy Region, Tuléar Province, Madagascar
3.8x 3.2x 1.4 cm
$1350
18MA29 Grandidierite
Tranomaro Commune, Amboasary District, Anosy Region, Tuléar Province, Madagascar
4.0x 2.0x 1.4 cm
$600
18MA30 Grandidierite
Tranomaro Commune, Amboasary District, Anosy Region, Tuléar Province, Madagascar
2.1x 2.0x 1.8 cm
$1000
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