$1,285Median
11Sold (12 mo)
$5,000Last sale
Grandidierite specimens for sale
11 for sale · $715–$4,500 USD
25 in the gallery
Grandidierite is a rare aluminum borosilicate mineral that forms prismatic to tabular crystals with a vitreous to pearly lustre. Its color ranges from bluish-green to green, and it often appears in translucent to opaque specimens with a subtle, pleasing dispersion of light across its surfaces. Crystals can occur singly or in small assemblages, frequently displaying a pale to strong vitreous sheen and characteristic elongated habit that aids in recognition. The type locality and most notable specimens come from Madagascar, where the mineral has been reliably recovered for decades and remains the primary source for exceptionally sized and well-formed crystals.
- Formula
- (Mg,Fe)Al3(BO4)(SiO4)O
- Rarity
- Rare
- Stability
- Stable
- Collector interest
- Very High Interest
Buy Grandidierite specimens
View all 11Where Grandidierite is found
Top localities
- Tranomaro-Maromby area24 specimens
- Anosy3 specimens
- Behara2 specimens
- Betroka District1 specimen
About Grandidierite
Collectors seek Grandidierite for its rarity, distinctive hue, and unusual crystal morphology. While individual crystals may vary in tone, the hallmark blue-green coloration pairs with a clean, glassy surface that can be highly eye-catching under proper lighting. The mineral’s limited supply, combined with its striking appearance, makes specimens appealing for display and mineral study, particularly when clear crystal faces and well-defined terminations are present. Grandidierite is appreciated by collectors who value unique mineral names, scarcity, and the challenge of acquiring pristine material from a classic Madagascan locality.
