Polished Dumortierite Free Forms x 12 From Madagascar MUSEUM PIECE Some pieces show banded colour

Some pieces show banded colour distribution else inclusive exposures or classic brecciation

Size = 85 - 117 mm

Size = 169 x 173 x 98 mm

Gorgeous dark Amethyst phantoms in the tips

which are opaque

Polished Dumortierite Free Forms x 12 From Madagascar MUSEUM PIECE Some pieces show banded colourA NOTE FROM NICK A tray of 12 beautifully polished highly selected rare Dumortierite free forms with warm dark blue colour. This material is super rare I have only seen this twice in over 30 years. PRODUCT DESCRIPTION Dumortierite from Madagascar Dumortierite from Madagascar, a fibrous aluminum borosilicate mineral known for its blue hues, ranging from sky blue to deep sapphire, with occasional violet or green tinges. Sourced primarily from regions