Bumblebee Jasper
Calcite with Arsenic and Sulfur inclusions · Semi-Precious Gemstone / Collector Mineral
Crystal System
Trigonal; massive and fibrous habit
Mineral Group
Carbonates (Calcite group)
Chemical Formula
CaCO3 (with S, As2S3, MnO2)
Formation Process
Found within volcanic fumaroles; it forms as a precipitate from hydrothermal fluids rich in sulfur and arsenic.
About This Crystal
Distinctive banded or mottled appearance featuring bright yellow, orange, black, and white/grey. It is opaque to slightly translucent with a vitreous to waxy luster.
Physical Characteristics
Colors of yellow, orange, and black; white streak; no cleavage in massive form; conchoidal to uneven fracture; specific gravity 2.6-2.7; non-fluorescent.
Optical Properties
Opaque (no refractive index usually measurable on cabs); uniaxial negative if crystalline; no significant pleochroism due to opacity.
Hardness & Durability
Origin Region
Mount Papandayan, West Java, Indonesia
Hardness & Durability
Mohs hardness 3.0 to 5.0; brittle tenacity; low durability. Sensitive to acids and household chemicals.
Care & Maintenance
Wash hands after handling due to arsenic content. Clean only with dry or slightly damp soft cloth; avoid ultrasonic cleaners and chemicals.
Rarity & Value
Relatively rare due to single-source location; value depends on vibrancy of yellow/orange bands. Often stabilized with resin.
Special Characteristics
Vibrant volcanic coloration caused by realgar and orpiment (arsenic minerals) and native sulfur; banding mimics 'bumblebee' stripes.
Lore & History
Discovered in the 1990s; traditionally associated with the Solar Plexus chakra, symbolizing confidence and clearing blocked energy.