A while back I asked Vixen what the consequences of an object in orbit encountering the Earth's atmosphere would be. She hasn't answered.
If she thinks rocks that have fallen to Earth are not that different to rocks collected on the moon it would explain why she might think moon rocks are shiny.
Moon rocks are not shiny, either recovered from the Moon or from Antarctica and elsewhere on Earth. Granted there are many types of Moon rock, but none of the mineral formations are shiny as recovered.
The only shiny one is the piece of lunar basalt at the National Air and Space Museum that has been worn smooth and shiny by the touch of millions of visitors.
As I wrote previously, there are lunar spherules. They are shiny, but also mostly transparent. They are molten drops of material that has been heated in impacts, risen above the surface, formed a sphere (as liquids do in free fall), hardened, and then landed back on the surface. These spherules are the cause of the prominent retroreflective properties of the aggregate lunar surface. They occur chiefly in sizes of 10-500 μm, or in other words, dust grains.
Our planetarium has a piece of lunar anorthosite that can be examined from just a few centimeters away. It has some grains of material that might be considered crystalline. But they are only fractions of a millimeter in size and do not make the entire specimen seem shiny. Coincidentally here in Utah we have a type of granite that closely resembles lunar anorthosite, only with much larger grains. We use it architecturally. It clads the capitol and the Mormon temple. In general these composite forms are shiny only when polished.
Lunar meteorites cannot be mistaken for rocks recovered from the Moon. Meteorites exhibit the fusion crust from their high-temperature passage through Earth's atmosphere. They also exhibit aerodynamic flow lines from the same experience. Hoax claimants say the fusion crust could be chipped off to reveal the pristine interior structure. This would still not make them look like rocks from the Moon. Moon rocks have a
different kind of crust indicative of their exposure to the space environment. Further, the vast majority of lunar meteorites are only tens of grams. Removing the fusion crust leaves you with almost no material. In contrast the Apollo samples average in the hundreds of grams and range up to more than 11 kg.
Further, lunar meteorites exhibit signs of their tenure on Earth. They show oxidation and water infiltration, things that cannot happen on the Moon and which contaminate most of the interior material. We know they're still Moon rocks because they show microscopic evidence of long-term exposure to cosmic rays, something that doesn't happen to Earth rocks and cannot be erased by time on Earth.