Grandidierite
at-auction$ 20
- Locality
- Anosy Region, Tulear Province, Madagascar
- Minerals
- Grandidierite
- Dimensions
- 4.5 x 3.0 x 2.5 cm
- Size class
- Miniature
- SID
- F111
Translucent blue green Grandidierite in a rare open cavity formation. There is even a very rare terminated crystal grown against the side of the cavity wall.Grandidierite is a rare magnesium aluminum borosilicate
first discovered in 1902 in the Anosy Region of Madagascar and often appears on lists of the 10 rarest gems in the world.
Crystals are very rare and ususally the best you can hope for are some crystal faces as they ususally grow in narrow seams.
Uncommon for the open formation and the quality is excellent with highly translucent crystals of great color. This is my last specimen with these large
crystals. Valued at $800.