Bumblebee Jasper

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.

Identified on: 4/24/2026

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