igneous

Bumblebee Jasper

Hydrothermal Volcanic Rock (Primarily Calcite with Orpiment - As2S3, Realgar, and Pyrite)

Hardness: 4-5 on Mohs scale; Color: Yellow, orange, black, and grey banding; Luster: Greasy to vitreous; Crystal Structure: Amorphous/Massive; Specific Gravity: 2.6 - 2.8

Hardness: 4-5 on Mohs scale
Color: Yellow, orange, black, and grey banding
Luster: Greasy to vitreous

Identified March 29, 2026More igneous →

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Physical properties

Hardness: 4-5 on Mohs scale; Color: Yellow, orange, black, and grey banding; Luster: Greasy to vitreous; Crystal Structure: Amorphous/Massive; Specific Gravity: 2.6 - 2.8

Formation & geological history

Formed through hydrothermal volcanic activity where sulfur-bearing minerals and volcanic ash were deposited in vents and then silica-bonded or calcified. It originates from Mount Papandayan in West Java, Indonesia.

Uses & applications

Primarily used for lapidary work, cabochons, metaphysical jewelry, and as ornamental display specimens for collectors.

Geological facts

Bumblebee Jasper is not technically a true jasper (which is silicate-based) but is a volcanic sediment stone. It contains toxic arsenic and sulfur, so it should be handled with care and never used in elixirs.

Field identification & locations

Identify by its distinctive 'bee-like' yellow and black banding. It is exclusively found near the fumaroles of an active volcano in Indonesia. Collectors should look for vibrant contrast and well-defined patterns.

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