Can moonstone go in water, the shower or an ultrasonic cleaner
Plain water is fine for moonstone beads, but pools and ultrasonic cleaners are not. Moonstone is Mohs 6 to 6.5 with cleavage, so internal layers can split from shocks or heat change. To clean: rinse with lukewarm water, use a tiny drop of mild soap and a soft brush or cloth, then rinse, pat dry and air dry flat.