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"The old conchoidal fracture on your rock is moderately resurfaced with terrestrial weathering precisely as expected on any terrestrial rock with an ancient break. It would impossible for a meteorite to have struck another different slower object while in atmospheric flight to have caused the conchoidal fracture and then be develop a thin flight crust before landing.  The conchoidal fracture of your rock in not a characteristic of meteorite breakage, but is is a frequent characteristic of terrestrial rocks. Meteorites do not form conchoidal fractures like your rock as they are not crystalline or glassy. Chondrites are not crystals. Your crystal spherical interior is proof it is not a meteorite. Meteorites do not have crystals like quartz with the exception of green pallasites in an iron nickel matrix.\n \n\n\n\tAmerican expression: \"You cannot make a pig's ear into a silk purse\". Meaning: \"There is no way you can turn a terrestrial rock into a meteorite\".\n \n\n\n\tKeep looking down. They're out there!\n \n\n\n\tbillpeters\n "
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