gemstone
Green chalcedony (likely agate) earrings
Chalcedony, microcrystalline quartz (SiO₂)
AI-generated identification · may be incorrectThe polished green stones are opaque to slightly translucent with a waxy luster; quartz hardness is about 6.5–7 Mohs. The image does not show diagnostic banding, so the exact stone and any dye treatment cannot be confirmed.
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Physical properties
The polished green stones are opaque to slightly translucent with a waxy luster; quartz hardness is about 6.5–7 Mohs. The image does not show diagnostic banding, so the exact stone and any dye treatment cannot be confirmed.
Formation & geological history
Chalcedony forms as silica deposited in cavities and veins, commonly in volcanic rocks; its age depends on the host deposit. Green color may be natural or produced by treatment.
Uses & applications
Used for cabochons, beads, jewelry, and decorative objects.
Geological facts
Chalcedony is a cryptocrystalline variety of quartz; agate is typically distinguished by visible banding.
Field identification & locations
Look for a smooth, glassy-to-waxy surface and hardness near 7; common sources include Brazil, India, Uruguay, and the United States. The earrings’ small size and photo limit confident identification.
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