As far as I know, Moon Rocks are THC Megazord. They are essentially cannabis hops (historically GSC, but any other variety will do), dipped or sprayed with hash oil, and then dipped in kief. Although the THC content of each batch of Moonstones varies and depends on how it is made / who produces it, the general consensus is that the THC values fluctuate around 50% THC. The highest percentage I've encountered is 52%.