mineral

Polished bumblebee jasper (likely calcite–orpiment/realgar material)

Calcite (CaCO₃) with sulfur-bearing sulfides, commonly marketed as “bumblebee jasper”

AI-generated identification · may be incorrect

Bright yellow, white, and black banded material with waxy to vitreous luster; typically opaque, fine-grained, and lacking visible cleavage. Calcite has Mohs hardness 3 and specific gravity about 2.7; the black component may be pyrite or manganese minerals.

Identified August 15, 2026More mineral →

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Physical properties

Formation & geological history

Usually formed in volcanic fumarolic or hot-spring environments, especially in Java, Indonesia, where yellow calcite and dark sulfide-rich layers develop together. It is commonly cut and polished rather than naturally crystal-faced.

Uses & applications

Used for cabochons, carvings, beads, and mineral collections; its striking pattern gives it modest jewelry value, but it is too soft for highly durable rings.

Geological facts

“Bumblebee jasper” is a trade name, not a true jasper in many specimens; some yellow material may contain realgar or orpiment, so avoid grinding, inhaling dust, or prolonged skin contact.

Field identification & locations

Identify by vivid yellow-black-white orbicular or banded patterns, softness, and possible calcite fizz with dilute hydrochloric acid; confirm composition with testing because appearance is variable. Commonly sold from Indonesian localities.