sedimentary (volcanic)

Bumblebee Jasper (technically Bumblebee Stone)

Calcite, Aragonite, and Realgar/Orpiment mixture (SiO2 + CaCO3 + As2S3/As2S2)

AI-generated identification · may be incorrect

Hardness: 3 to 5 (Mohs scale); Color: Yellow, orange, black, and grey bands; Luster: Waxy to vitreous when polished; Crystal Structure: Rhombohedral (mostly Microcrystalline); Cleavage: None/Indistinct; Specific Gravity: 2.6 - 2.8

Hardness: 3 to 5 (Mohs scale)
Color: Yellow, orange, black, and grey bands
Luster: Waxy to vitreous when polished

Identified March 19, 2026More sedimentary (volcanic) →

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Physical properties

Formation & geological history

Formed in volcanic fumarole environments where volcanic ash meets carbonate-rich sediment. It originated during the Neogene-Quaternary periods in Indonesia.

Uses & applications

Primarily used in the lapidary arts for jewelry, cabochons, and decorative ornamental carvings. Also popular among mineral collectors for its unique aesthetic.

Geological facts

Despite its name, it is not a true Jasper because it is composed mainly of carbonate minerals (Calcite/Aragonite) rather than silicates. The vibrant yellow/orange colors are caused by toxic arsenic sulfide minerals (Realgar and Orpiment).

Field identification & locations

Identify by its distinct high-contrast yellow, orange, and black banding. Most common specimens come solely from Mount Papandayan in West Java, Indonesia. Collectors should handle raw specimens with care due to the arsenic content, though polished pieces are generally safe.