$48Median
14Sold (12 mo)
$55Last sale
Dumortierite specimens for sale
2 for sale · $45–$55 USD
18 in the gallery
Dumortierite is a mineral species that forms in close association with aluminous and silicate-rich environments. It typically occurs as elongated, prismatic crystals or fibrous aggregates with a distinctive blue to violet color that can deepen in rich, well-formed crystals. The mineral’s lustre is vitreous to pearly, and it often displays zoned color patterns that are especially attractive in cut or polished specimens. Crystals may appear in crustlike masses or as compact fibrous aggregations, and they can be found in association with other aluminum-rich minerals in metamorphic and metasomatic settings.
- Formula
- Al(Al2O)(Al2O)2(SiO4)3(BO3)
- Rarity
- Rare
- Stability
- Stable
- Collector interest
- High Interest
- Classification notes
- Silicate mineral; borosilicate; aluminosilicate
Buy Dumortierite specimens
View all 2Where Dumortierite is found
Top localities
- Vaca Morta quarry16 specimens
- Bahia2 specimens
About Dumortierite
Notable localities include Brazil and the United States, where Dumortierite-bearing rocks yield well-formed specimens that attract collectors for their characteristic coloration and crystal habit. Specimens from these sources can showcase sharp faces, good transparency in small crystals, and interesting microstructure details that reveal the mineral’s complex crystal chemistry. Collectors value Dumortierite for its unique palette and the ease with which its color effects can be observed in hand-size pieces or in carefully prepared clusters.
