An ultrasonic jewellery cleaner works by using high-frequency sound waves to create microscopic bubbles in a cleaning solution, a process known as cavitation. Here's how it works step-by-step:

1. The Ultrasonic Transducer Generates Sound Waves
• Inside the cleaner, a component called a transducer converts electrical energy into high-frequency sound waves (typically 20–40 kHz).

• These sound waves are transmitted through the cleaning liquid, usually water with a mild detergent or specialised solution.

2. Cavitation Happens
• The sound waves cause the liquid to form microscopic bubbles that rapidly grow and collapse.

• This collapse generates tiny, high-energy shockwaves.

3. Dirt and Contaminants Are Dislodged
• The energy released from these collapsing bubbles gently removes dirt, grime, oils, and other contaminants from even the tiniest crevices of jewellery.

• It can clean areas that are nearly impossible to reach with a brush or cloth.

4. The Jewellery Is Rinsed and Dried
• After the cycle (usually a few minutes), the jewellery is removed, rinsed with clean water, and dried.

• The result is a thorough, non-abrasive clean that restores shine and brilliance.

Gentle on delicate items (if used correctly).

Highly effective at cleaning intricate and hard-to-reach areas.

Fast and efficient.

Not all materials are safe—porous stones (e.g., opals, emeralds, pearls) and some treated gems can be damaged.

Always check the manufacturer’s guidelines for each piece before using an ultrasonic cleaner.

Soft, Porous, or Treated Gemstones - These can be damaged or lose their finish:

Opals (can crack)

Emeralds (often fracture-filled)

Pearls (porous and delicate)

Turquoise

Lapis Lazuli

Coral

Amber

Heat-Treated or Coated Stones

Mystic topaz

Any dyed or foil-backed stones (e.g., rhinestones)

Jewellery with loose stones or fragile settings

Costume jewellery with glued-in stones (ultrasound can loosen glue)

Vintage or heirloom pieces (risk of damage or loosening settings)

Use a soft brush and mild soap instead.

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Silver tarnishes over time as it reacts with sulphur containing substances in the air, forming a compound called silver sulphide (Ag₂S). This reaction is what causes the surface of silver to darken or turn black over time.

Sources of sulphur:
Air pollution (especially near industrial areas)

Household items (like rubber bands, wool, latex, and some foods - eggs, onions, garlic)

Skin oils and sweat (which can contain sulphur compounds)

We recommend using a commercial silver polish with a soft cloth to remove the patina - although a lot of clients prefer the "aged" look.