Pearl-Safe Jewelry Cleaners — Ammonia-Free, pH-Balanced for Nacre

Of everything we make, the Original Cleaning Spray is the one formulated for cultured Akoya, Tahitian and South Sea pearls — ammonia-free, pH-balanced and biodegradable, with no alcohol and no acid in it. Pearls are the material where less equipment is better: the Original Cleaning Spray in the 2 oz (60 ml) size and a clean microfibre are the whole toolkit. No brush, no polishing cloth, no ultrasonic bath.

Pearls are not stones — they are layers of aragonite and conchiolin (a natural protein binder) wrapped around a nucleus. Every commercial "jewelry cleaner" with ammonia, alcohol, or acid will dissolve the conchiolin, and once that's gone the surface goes from mirror-bright to chalky. Same goes for ultrasonic baths and steam cleaners: pearls are the one piece of jewelry that should never go in either. Sparklean has been making biodegradable, pH-balanced cleaner since 2003, and it is formulated to be sprayed directly on the pearl surface without dulling the lustre — including on strands where the silk thread is exposed at the knots. Step-by-step process is in our guide on how to clean pearls safely. For pearl care you only need the 2 oz spray.

How to choose

For pearls, smaller is better — the 2 oz Original Spray is plenty for a strand, earrings, or a pearl ring. Skip the brush (even the soft SparkBrush is too firm for pearls — use a clean microfibre instead). Skip the polishing cloth (it has a micro-abrasive designed for metal, not nacre). If you also own diamond or gold pieces, see the other collections — but for pearls alone, one 2 oz spray is the answer.

Frequently asked

Why are most jewelry cleaners unsafe for pearls?

Because they contain ammonia or strong solvents that dissolve conchiolin — the natural protein that holds the aragonite platelets of nacre together. Once conchiolin breaks down, the nacre flakes off in micro-layers and the pearl looks dull no matter how much you polish.

Can I use Sparklean on freshwater pearls, not just saltwater?

Yes. Freshwater pearls (typically from mussels) have the same nacre + conchiolin structure as saltwater Akoya, Tahitian, or South Sea pearls. The same guidance applies to all four types.

What about the silk thread on a strand?

It is prolonged soaking that weakens silk thread and rots the knots, not a light application. Use the spray sparingly, wipe dry immediately with a microfibre, and lay the strand flat to fully air-dry before storing.

Will it work on a pearl with surface marks or "growth lines"?

Sparklean removes dirt and skin oil but cannot remove growth lines, surface dimples, or chips — those are part of the pearl's structure. If the pearl has been damaged by past ammonia exposure (chalky surface), it is unfortunately permanent.

How do I store pearls between cleanings?

Separately from other jewelry, in a soft pouch or lined box. Never in a plastic bag — plastic outgasses chemicals that dull nacre. Wear your pearls last (after perfume, lotion, hairspray) and clean them gently with Sparklean before putting them away.

Related guides

• How to clean pearls safely
• Best cleaner for pearls
• Is ammonia bad for your jewelry?
• Jewelry care in coastal and salt-air climates