Agate
gem · common
Quick facts
- Formula
- SiO2
- Hardness
- 6.5–7
- Luster
- Waxy
- Colors
- Banded, many colors
Banded chalcedony. Translucent in thin edges; concentric or fortification banding is diagnostic.
Without a scale or a lit edge, AI often swaps agate and jasper. A backlight photo helps.
Scan yours
Photograph your specimen on arockid.com or in RockSnap / RockID. Three free IDs a day — no card.
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