Pearls require gentler cleaning than other gemstones. Their nacre — a layered composite of aragonite and conchiolin protein — dissolves in acidic substances, scratches under abrasive cleaners, and dulls under chemical residue. This guide walks through safe cleaning step by step.

What you'll need

• Soft, lint-free cloth (microfiber or jewelry polishing cloth)
• Distilled or filtered water (tap water minerals can deposit on nacre)
• Mild dish soap (Castile or unscented)
• Soft natural-bristle brush (optional, for cleaning around clasps)

What to avoid

• Ultrasonic cleaners (vibration cracks nacre)
• Steam cleaners (heat damages nacre)
• Alcohol-based cleaners
• Toothpaste (abrasive)
• Vinegar or lemon juice (dissolves nacre)
• Bleach
• Scrubbing pads

Daily care (after each wearing)

1. Wipe pearls gently with a soft cloth
2. Remove perfume, lotion, or skin oil residue
3. Allow to air dry briefly (1-2 minutes) before storing

Light cleaning (every 1-3 months for daily wear)

1. Slightly dampen a soft cloth with distilled water
2. Wipe each pearl gently, paying attention to the drill hole area
3. Dry with a clean soft cloth
4. Lay flat to air dry completely before storing

Deeper cleaning (every 6-12 months)

1. Mix one drop of mild dish soap in a cup of distilled water
2. Dampen a soft cloth with the solution (not soaking wet)
3. Wipe each pearl gently
4. Wipe with a clean cloth dampened with plain distilled water to remove soap residue
5. Dry thoroughly with a soft cloth
6. Lay flat to air dry for 1-2 hours before storing

Cleaning the clasp

Use a soft natural-bristle brush dipped in mild soap solution. Gently scrub the clasp and any metal links. Rinse with distilled water. Dry thoroughly. For tarnished sterling silver clasps, use a silver polishing cloth (away from pearls).

What NOT to do

• Never submerge pearls in water (especially knotted strands — silk weakens when soaked)
• Never use ultrasonic or steam cleaners
• Never use commercial jewelry cleaning solutions on pearls (most are too harsh)
• Never wipe with paper towels (microscopic fibers can scratch)
• Never store wet pearls (encourages mildew and weakens silk)

Professional cleaning

For valuable pearl pieces ($1,000+), annual professional cleaning is recommended. Most jewelers offer pearl cleaning at $30-80 per piece. Professional cleaners use specialized tools and microfiber techniques that gently remove buildup without risk of damage.

Frequently asked questions

Can I use vinegar to clean pearls?

No. Vinegar is acidic and dissolves nacre — the cleaning will permanently damage the pearl.

How often should I deep-clean pearls?

Every 6-12 months for daily-wear pieces. Wipe daily with a soft cloth after each use.

Can I use jewelry polishing cloth on pearls?

Yes, the soft microfiber type. Avoid silver or chemical-treated polishing cloths — the chemicals can transfer to pearls.

What about pearl cleaning products in stores?

Most commercial jewelry cleaners are too harsh. Stick with mild dish soap and distilled water — it is what professionals use.

Can I use my pearl necklace right after cleaning?

Allow 1-2 hours to air dry completely before wearing or storing. Wet silk thread can stretch when worn.