A zakor is these glass stones they put in rings to look like diamonds. In English it’s a (zorkanda or something like that.)
Perhaps the word “powers” is wrong, but the Cohen Gadol wore certain stones for those reasons. And a pearl can cause a baby to be born sooner and many women (after they are safely in bed in the hospital) will swallow down a tiny seed pearl ( at a certain point in the labor and not sooner) and the baby will usually be born within half and hour.
Furthermore, women wear a ruby against their skin to prevent miscarriages, if I’m not mistaken, and these thing have their source in Gemorrah and are NOT pagan.
Check out the stones of the Cohen Gadol and see that each has a deep meaning.