Ultrasonic cleaning machines utilize high-frequency sound waves to create microscopic cavitation bubbles that dislodge dirt, but can permanently destroy fragile gemstones.
1. Gemstone Cleaning Safety Chart
| Gemstone Type | Ultrasonic Safe? | Steam Safe? | Safe Cleaning Method |
|---|---|---|---|
| Diamond, Sapphire, Ruby | YES (Unless heavily fracture-filled) | YES | Ultrasonic bath + warm soapy water with soft brush |
| Emerald, Tanzanite, Aquamarine | NO (Cavitation expels oils/resins) | NO | Lukewarm water, gentle dish soap, soft microfiber |
| Pearl, Opal, Turquoise, Coral | STRICTLY NO (Porous / organic shock) | STRICTLY NO | Damp cloth wipe; never submerge in chemicals |