mineral

Blue tumbled glass-like specimen; likely blue slag glass

Likely man-made glass (silicate glass), not a natural mineral; exact material cannot be confirmed from the image

AI-generated identification · may be incorrect

Translucent deep teal-blue, glossy luster, smooth rounded surface, and no visible crystal structure or cleavage. If glass, it has no Mohs hardness rating used for crystalline minerals; typical glass is about 5–6.

Identified October 2, 2026More mineral →

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At a glance

Common name: Blue tumbled glass-like specimen; likely blue slag glass
Scientific name: Likely man-made glass (silicate glass), not a natural mineral; exact material cannot be confirmed from the image
Category: mineral
Identified: October 2, 2026
Method: Standard

AI Estimated Value

About $1–$10 as a small decorative/tumbled piece; higher value would require verified natural mineral identification.

Not an official valuation

AI estimate for general interest only — not an appraisal. Actual value depends on condition, provenance, and market demand. Verify with a professional before buying, selling, or insuring.

This identification was generated by AI and may contain errors. Verify important details before relying on them — and never use an AI result to judge whether a specimen is safe to handle. Read the full disclaimer

Physical properties

Formation & geological history

The pictured piece appears glassy and shaped, possibly industrial slag or decorative glass tumbled smooth—not a geological rock. Its age and formation environment cannot be determined visually.

Uses & applications

Commonly used as decorative or craft material; natural blue minerals such as apatite or chalcedony may resemble it, but this piece has a glass-like appearance.

Geological facts

Bubbles, flowing swirls, and conchoidal fracture can help distinguish glass from crystalline minerals; these details are not conclusive in this image.

Field identification & locations

A reliable identification requires examining the surface and edges for bubbles, flow lines, crystal faces, or hardness. Blue glassy slag is produced in many industrial regions worldwide.