Hollowglass
Fantasy mineral · uncommon · SiO₂ (hollow amorphous)
An amorphous silicate forming in volcanic environments exposed to persistent wind. Its hollow interior resonates with passing air currents, producing audible tones. Extremely fragile despite its appearance.
Identity
- Formula
- SiO₂ (hollow amorphous)
- Chemical class
- silicate
Crystallography
- Crystal system
- amorphous
- Habits
- nodular, tubular
Physical properties
- Mohs hardness
- 5
- Density
- 1.6 g/cm³
- Luster
- vitreous
- Colors
- black, dark gray, smoky brown
- Streak
- gray
- Transparency
- translucent, opaque
Geology
- Origins
- volcanic
- Geography
- high mountain vents, windy volcanic plateaus, Feywild storm peaks
Classification
- Rarity
- uncommon
- Gem quality
- No
Arcane properties
- Affinity
- air, arcane
- Effects
- scrying, mind
- Planar origin
- Material Plane
Browse the Crystal Encyclopedia — MGS Toolbox