Unlike shamrocks, which have three leaves, four-leaf clovers aren't considered religious symbols, especially not in Ireland. Related: 17 St. Patrick's Day Traditions To Help You Celebrate Irish Pride ...

The clover’s mystique, Smith said, comes from its rarity. She estimated that for every field of 10,000 three-leaf clovers, there might be only one clover of the four-leaf variety.

Although it has been said that four-leaf clovers are exceedingly rare—as few as one in 10,000—an independent study carried out by Swiss researchers looked at 5.7 million clovers and found that ...

The analysis from a Wisconsin casino determined that the four leaf clover is the most common superstition in the Bay State. It's said that only about 1 in 10,000 clovers have four leaves ...