igneous
Bumblebee Jasper
Volcanic Tuff (mixture of Quartz, Sulfur, Hematite, and Orpiment)
Hardness: 5.0 (variable); Color: Yellow, orange, black, and grey swirling patterns; Luster: Vitreous to dull; Crystal Structure: Amorphous/microcrystalline; Specific Gravity: 2.6
- Hardness
- 5
- Color
- Yellow, orange, black, and grey swirling patterns
- Luster
- Vitreous to dull
Identified More igneous →
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Physical properties
Hardness: 5.0 (variable); Color: Yellow, orange, black, and grey swirling patterns; Luster: Vitreous to dull; Crystal Structure: Amorphous/microcrystalline; Specific Gravity: 2.6
Formation & geological history
Formed from volcanic activity and sedimentary deposition near hot vents. Geologically young, these are primarily found in volcanic fumaroles in Indonesia where ash and sulfur deposits mingle.
Uses & applications
Primarily used in jewelry as cabochons, bolo ties, and decorative carvings; highly sought after by collectors for its vibrant unique patterns.
Geological facts
Despite its name, it is technically a carbonate-rich volcanic rock (tuff) rather than a true Jasper. It contains Orpiment (Arsenic sulfide), so it should be handled with care and not tasted or inhaled during cutting.
Field identification & locations
Identify by its distinct 'bumblebee' yellow and black banding. Found specifically at Mount Papandayan in West Java, Indonesia. Avoid pieces with unnatural neon dyes as this rock is naturally vibrant.
