I don’t know if it’s officially a separate genre, but there are quite a lot of thrillers that chronicle the adventures of people searching for (possibly non-existent) ancient artifacts. Sometimes the premise is that they are real, and will change the course of history if they are found. In every case, they provide a powerful motive for epic clashes between good guys and bad guys.
The Moses Stone, published by James Becker in 2009, is one of these stories that takes a more measured view. The Moses stone of the title, the tablets containing the Ten Commandments, is probably only an ancient copy (it’s written in old Aramaic). Maybe that’s why it has a only a very minor supernatural power – when uncovered after two thousand years, it’s dust free. That seems like a bit of a let down, more suited to the daydreams of a tired housewife than to such a unique religious artifact.
It’s an entertaining plot. The good guys are a British policeman who becomes involved when a couple of British tourists are murdered in Morocco, and his archeologist ex wife. The Israeli Mossad is on their side but bloodthirsty Arab and British bad guys are also looking for the prize.
However, if you would like an even more exciting true story, read The Gold of Exodus, a 1998 book by Howard Blum. This chronicles the adventures of two bona fide nuts (used here as a term of respect and admiration) who become obsessed with finding said gold and follow the trail wherever it leads them, finally sneaking into a Saudi Arabian army base. They didn’t find the gold, but at least they survived.