How did you get one?
From a well known collector who was selling some small ones, I got 2 lunar. Same with the Mars meteorites, another collector.
The lunar meteorite mentioned in the article which is usually referred to as a moon rock was collected on the moon during an Apollo moon mission. They are much more valuable usually but not always than the lunar meteorites I bought, which were ejected from moon surface by a meteor strike, then captured by earth’s gravity and some of it usually just small pieces make it through earth’s gravity and land on surface. Same for the registered Mars meteorites.
The ones I bought are small pieces that fell off when they were being cut. But they still have value, sometimes they are very valuable.
The lunar and Mars pieces I have are all under 1 gram.
The moon rocks or pieces from or dust from are generally more valuable because they came back from a Apollo mission, they are not rarer geologically. Like a rare baseball card, few have them and collectors want them. I seem to remember Bill Clinton stole a moon rock from White House claims it was an oversight, figures huh?