man-made glass
Crackle Glass (Simulated Gemstone)
Amorphous Solid (SiO2)
AI-generated identification · may be incorrectHardness ~5.5, white/translucent with blue dye in fractures, vitreous luster, conchoidal fracture
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Physical properties
Hardness ~5.5, white/translucent with blue dye in fractures, vitreous luster, conchoidal fracture
Formation & geological history
Manufactured by rapidly cooling hot glass in water to create internal stress fractures, then dyed.
Uses & applications
Used in inexpensive jewelry and crafts as a faux gemstone.
Geological facts
Often sold under misleading names to appear as natural stones. The dye seeps into the cracks, highlighting the web-like pattern.
Field identification & locations
Identify by the uniform web of cracks and intense color concentration only within the fractures. Lacks natural mineral inclusions or cleavage.
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