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| Powerstone | |
| Type: | Mineral |
| Continuity: | DC Universe |
| Aliases: | Black rock |
| Availability: | Unique item |
| Owners: | Peter Silverstone Samuel Benjamin |
| 1st appearance: | Justice League America #43 |
The Powerstone is a fictional alien artifact featured in comic books published by DC Comics. It first appeared in Justice League America #43 in October, 1990 in a story titled "If You Play Your Cards Right...".