Tandon Gems

Can moonstone go in water, the shower or an ultrasonic cleaner

Anish Tandon, Founder, Tandon GemsPublished September 5, 2026· 2 min read

Short answer

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.

In short

  • Plain tap water and mild soap are safe for moonstone.
  • Avoid pools, hot tubs, steam and ultrasonic cleaners.
  • Remove before showering to prevent knocks and string wear.
  • Dry strands flat on a towel before storing.
  • Bracelets take more hits; choose earrings or necklaces instead.
A close-up of white and peach moonstone bead strands with soft sheen.

What happens if moonstone gets wet?

Plain water does not harm moonstone beads. Both rainbow moonstone, a white labradorite, and the peach to gray orthoclase types show sheen from thin internal layers that can act like natural split lines. The material is Mohs 6 to 6.5, so it resists light scratches but dislikes shocks and big temperature swings. Read more about rainbow types in our Rainbow Moonstone guide and orthoclase types in our Peach and Gray Moonstone guide.

How should I clean a moonstone bead strand?

Keep it simple and gentle. Work over a soft towel so drops do not bounce beads off a hard sink. Clean the metal findings separately if needed, and keep harsh cleaners away from the beads and thread.

  • Give a brief lukewarm rinse.
  • Use a tiny drop of mild dish soap, wipe with a soft cloth or very soft brush.
  • Follow with a clean water rinse and pat dry.
  • Lay the strand flat to air dry fully before storing.
Strands mentioned in this post

Should I wear moonstone in the shower or pool?

We recommend taking moonstone off before showering. Soap film dulls the glow, temperature swings can stress cleavage planes, and strands can snag or stretch. Pools and hot tubs add chlorine or heat, which are poor conditions for feldspar and for common stringing fibers. If a piece gets wet unexpectedly, use plain water for a quick rinse, pat dry and let it air dry flat.

How do bead strings hold up to water and soap?

Silk or nylon absorbs water and can stretch or stiffen, and knotting may tighten or loosen after repeated wetting. Beading wire dislikes kinks from wet handling and hard knocks. Give strands time to dry flat on a towel, then check knots near the clasp for fuzzing or gaps. Restring when fray appears or spacing looks uneven.

Why is moonstone sensitive to knocks?

Feldspar has cleavage, and moonstone's sheen comes from thin layers that scatter light. Those same layers can part if hit or bent, especially on larger faceted beads. That is why we favor earrings and necklaces for moonstone, and we discourage rough-wear bracelets. Gentle handling preserves the billowy glow designers love.

What stringing and storage do we recommend?

Knot between beads to limit contact, or use a soft beading wire with snug crimping and protective wire guards at the clasp. Store moonstone strands in individual pouches away from heat sources. If you plan a quick restring, keep these counts in mind for rondelles and standard cutter lengths.

  • On a 15 to 16 inch strand, 6 mm rondelles count about 65 to 70 beads.
  • For 8 mm rondelles on 15 to 16 inches, expect about 48 to 52 beads.
  • 4 mm rondelles on 15 to 16 inches run about 95 to 100 beads.
  • Allow 1.5 inches for clasp and findings on a finished piece.

Which moonstone strands do we stock for safer wear

We stock shapes that shine in earrings and pendants, like pyramids, pears, marquises and arrowheads. See our Rainbow Moonstone 9x15 mm Pyramids or Gray Moonstone 10x40 mm Pears for long drops. Our current show dates are on the schedule. We sell strands by WhatsApp or email with free US shipping over $100.

Common questions

Can moonstone be soaked to remove grime?

Avoid long soaks. A brief lukewarm rinse with a tiny drop of mild soap, then a soft wipe, is safer. Finish with a clean water rinse, pat dry and air dry flat.

Is salt water bad for moonstone beads?

Rinse salt off as soon as you can. Salt and residue can collect in drill holes and on thread, which may stiffen knots. Fresh water rinse and thorough drying help.

Do rainbow and peach moonstone need different care?

Care is the same. Both are Mohs 6 to 6.5 feldspars with cleavage and a layered structure, so use only warm soapy water. Skip ultrasonic and steam.

How do I dry a knotted moonstone necklace after cleaning?

Pat it with a soft towel, lay it flat on a dry towel and let it air dry fully. Flip once so both sides dry. Store only when it feels completely dry.

Should I make moonstone bracelets?

We suggest earrings or necklaces because bracelets take more knocks. If you make bracelets, use protective spacing or knotting and advise gentle wear.

Sources and checks

  1. Moonstone Care and Cleaning Guide
  2. What Is Moonstone Gemstone | Moonstone Stone – GIA
  3. Is moonstone tough enough for rings?

Facts about our own strands come from the stock room in Cupertino. Prices and stock on this page are live from the shop.

Strands to start with

All rainbow moonstone
Want a strand like the ones in this post?

Message Anish with the stone, shape and size you have in mind. Photos of actual strands on request.

Ask on WhatsApp

Keep reading