$700Median
2Sold (12 mo)
$150Last sale
Kieserite specimens for sale
1 for sale · $1,250 USD
1 in the gallery
Kieserite is a magnesium sulfate mineral that forms as colorless to white crystals or compact masses, typically exhibiting a vitreous to silky lustre. It commonly occurs in botryoidal, prismatic, or fibrous aggregates and can form as tabular crystals when conditions favor slow growth. The mineral is widely known from evaporitic environments and is often found associated with other sulfate minerals in sulfur-rich locales. Notable specimen sources include German localities, where high-quality crystals have been collected from evaporite deposits and hydrothermal settings that facilitate hydration and growth of the MgSO4·H2O phase.
- Formula
- MgSO4 · H2O
- Rarity
- Common
- Stability
- Stable
- Collector interest
- Moderate Interest
- Classification notes
- Sulfate; hydrated sulfate without additional anions, kieserite group
Key characteristics
- Crystal system
- monoclinic
- Mohs hardness
- 3.5
- Specific gravity
- 2.57
- Luster
- vitreous, dull
- Transparency
- transparent, translucent
- Color
- colorless, white, gray, yellow
- Streak
- white
- Cleavage
- perfect
- Fracture
- conchoidal
- Crystal habit
- prismatic, granular, massive
Buy Kieserite specimens
View all 1About Kieserite
Collectors prize kieserite for its delicate needle-like and bladed habits, its clear to pale coloration, and the scientific significance of its hydration state. Crystals can display transparency and a vitreous to satin-like sheen, making them attractive for display and study. As a relatively rarer sulfate mineral, specimens that show well-formed crystals or attractive aggregate forms from classic German sites are sought after by mineral enthusiasts aiming to add a historically and scientifically meaningful piece to their cabinets.
