$548Median
10Sold (12 mo)
$1,500Last sale
Imayoshiite specimens for sale
10 for sale · $550–$2,150 USD
26 in the gallery
Imayoshiite is a hydrated calcium aluminium borate-carbonate mineral that forms delicate, acicular to fibrous crystals. Its hexagonal system yields slender, needle-like aggregates with a vitreous to silky luster and a generally colorless to white appearance. Crystals are typically transparent to translucent, with a low hardness of 2–3 and a specific gravity around 1.79, making them sensitive to handling and ideal for micro-mount displays.
- Formula
- Ca3Al(CO3)[B(OH)4](OH)6·12H2O
- Rarity
- Ultra Rare
- Stability
- Moderately Stable
- Collector interest
- Niche Interest
- Classification notes
- Hydrated calcium aluminium borate-carbonate mineral.
Key characteristics
- Crystal system
- hexagonal
- Mohs hardness
- 2–3
- Specific gravity
- 1.79
- Luster
- vitreous, silky
- Transparency
- transparent
- Color
- colorless, white
- Streak
- white
- Cleavage
- distinct
- Fracture
- uneven
- Crystal habit
- acicular, fibrous
- Micro-mount only
Buy Imayoshiite specimens
View all 10Where Imayoshiite is found
Top localities
- Shijiangshan Mine36 specimens
About Imayoshiite
Notable specimens have come from China, where the mineral’s rare occurrence aligns with niche collecting interests. The mineral’s rarity and distinctive habit attract mineralogists and collectors who specialize in hydrated borates and carbonates, as well as those focusing on micro-mount material. Its distinct cleavage and uneven fracture contribute to its unique surface texture, adding character to small, meticulously prepared specimens. Imayoshiite offers continuing appeal to collectors who value rarity, precise mineralogical composition, and the challenge of presenting fine, delicate crystals in compact mounts.
