| Green Agate found on Lake Superior? Any idea what this is? | 6 | SpaceOk3159 | | | | |
| Is this black obsidian? | 6 | AbominableUgly | | | | |
| Tiny minerals from Vesuvius crater edge | 6 | danchi987 | | | | |
| Found on railroad tracks. | 6 | manyfacedsteeze | | | | |
| Half petosky? | 6 | Kisssingkatie | | | | |
| Can you help me identify this rock? | 6 | janizuu | | | | |
| Rocks | 6 | XBR4iND34Dx | | | | |
| What type of rock is this? Found on the island of Öland, Sweden. | 6 | AnnieAnoles | | | | |
| Pietra River Colorado | 6 | Mom5-LanHom | | | | |
| Found in a hotel flower bed?? | 6 | ponchothegreat09 | | | | |
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