Translucent blue green Grandidierite in a rare open cavity formation. 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.

Translucent blue green Grandidierite crystal. 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. Though not terminated, it is crystalized all around and good sized. The quality is excellent with highly translucency great color.

Two intersecting translucent blue green Grandidierite crystals with an unidentified white crystal. 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. The smaller crystal is 2.5cm long and complete, though the ends are rough looking. It also has GEM areas, which is rare. The quality is excellent with highly translucency great color.

Translucent blue green Grandidierite crystal. 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. Though not terminated, it is crystalized on both sides. The quality is excellent with highly translucency great color.

Translucent blue green Grandidierite in a rare open cavity formation. 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.

Rare single terminated crystal of translucent blue green Grandidierite. It's not in perfect condition but it is terminated and complete all around which is very uncommon. 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.

Translucent blue green Grandidierite with good crystal faces on the sides. 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. Highly translucent crystals of great color.