gemstone
Goldstone (brown goldstone)
Man-made aventurine glass, typically copper-bearing silica glass
AI-generated identification · may be incorrectPolished reddish-brown material with glittering copper-colored inclusions and a glassy luster; hardness is roughly 5.5–6 Mohs. It is amorphous, with no cleavage; its sparkle comes from reflective copper crystals, not natural mineral grains.
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Physical properties
Polished reddish-brown material with glittering copper-colored inclusions and a glassy luster; hardness is roughly 5.5–6 Mohs. It is amorphous, with no cleavage; its sparkle comes from reflective copper crystals, not natural mineral grains.
Formation & geological history
A manufactured glass, not a naturally formed rock: copper particles crystallize within molten silica glass as it cools. It has no geological age or natural formation environment.
Uses & applications
Used for beads, cabochons, decorative objects, and inexpensive jewelry.
Geological facts
Despite its name, goldstone is neither natural stone nor gold; it is an imitation aventurine gemstone.
Field identification & locations
The uniform glitter suspended in a smooth glassy body and lack of natural mineral texture help distinguish it from natural rocks. Commonly produced as a lapidary material; avoid identifying it as sandstone or natural aventurine from appearance alone.
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