Yellowish-green olive jade beads and pendants are occasionally called peridot stone due to their color (not because of any relationship to that gemstone).
Olive jade is actually a form of serpentine, and is not a "true" jade. These semiprecious beads and donuts are softer and less dense than most real jade.
Historically, serpentine was thought to protect the wearer from snake bites. Modern mystics say it has the power to restore self-confidence, dispel fear, enhance meditation, and balance female hormones.