igneous
Dyed turquoise-colored lava stone beads
Vesicular basalt (scoria), commonly sold as dyed lava rock
AI-generated identification · may be incorrectDark volcanic basalt/scoria made porous by gas bubbles; Mohs hardness about 5–6, dull to slightly glassy luster, fine-grained matrix, irregular vesicles, and low-to-moderate density. The vivid blue color is artificial dye or coating, not typical natural basalt coloration.
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Physical properties
Dark volcanic basalt/scoria made porous by gas bubbles; Mohs hardness about 5–6, dull to slightly glassy luster, fine-grained matrix, irregular vesicles, and low-to-moderate density. The vivid blue color is artificial dye or coating, not typical natural basalt coloration.
Formation & geological history
Formed when basaltic lava cooled rapidly at or near the surface, trapping gas bubbles and creating vesicles; likely Cenozoic or younger volcanic material. Common sources include volcanic regions of Indonesia, Mexico, Italy, and the western United States.
Uses & applications
Cut and drilled for inexpensive jewelry, diffuser beads, and decorative crafts; the porous surface can absorb fragrance oils. These are generally low-value commercial beads rather than collectible mineral specimens.
Geological facts
The material is geological, but its blue appearance is human-processed. It should not be confused with natural turquoise, which is a hydrated copper-aluminum phosphate and is usually opaque blue-green with a waxy luster.
Field identification & locations
Identify by lightweight porous spheres, abundant rounded holes, matte texture, and dye concentrated in pits; natural turquoise is denser, smoother, and lacks vesicular lava texture. Dye may rub or leach with solvents or prolonged water exposure.
