A Bermuda lucky stone (enhydro/enhydros) is a gemstone—usually agate or quartz—containing visible, moving liquid (water, oil, or gas) trapped during formation millions of years ago. The liquid appears as a bubble that moves when tilted.
Colors: clear, white, blue, green; clear most common, colored rarer. Sizes: pebbles to boulders; 1–2 inches popular. Found worldwide but first discovered in Bermuda; also in Brazil, Mexico, USA.
Believed to bring luck, fortune, protection; used as talismans/amulets/jewelry.