mineral

Polished bumblebee jasper heart

Calcite–realgar–orpiment-rich altered volcanic rock, commonly marketed as bumblebee jasper

AI-generated identification · may be incorrect

Yellow, orange, gray, and black banding with a waxy-to-glassy polish; typically Mohs 3–4 because of abundant calcite, with variable porosity and no visible cleavage in the finished piece. Composition and appearance vary widely; some specimens contain sulfide minerals and should not be scratched, cut, or licked.

Identified August 25, 2026More mineral →

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Physical properties

Formation & geological history

Formed by hydrothermal alteration of volcanic material, especially in Indonesia, with yellow calcite and sulfur-bearing minerals filling cavities and fractures; generally geologically young, commonly Cenozoic. It is polished and heart-shaped here.

Uses & applications

Used mainly for cabochons, carvings, hearts, and mineral collecting; unsuitable for major construction applications. Handle with care because realgar/orpiment-bearing material may be toxic as dust.

Geological facts

“Bumblebee jasper” is a trade name rather than a formal jasper species, and much marketed material is calcite-rich rather than true quartz jasper.

Field identification & locations

Identify by vivid yellow-orange-black orbicular or banded patterns, low hardness, and acid reaction from calcite; common sources include Java, Indonesia. Avoid powders, prolonged water exposure, and ultrasonic cleaning.