Taking care of your Prehnite jewelry is quite easy. Besides the usual rules, like keeping it separate from other jewelry in a soft box and not using harsh chemicals, there are few rules which apply specifically for Prehnite:
1. Never put your Prehnite in hydrochloric acid - as it will be dissolved.
2. Do not clean it with alkali.
3. Do not heat your Prehnite - even small heat, such as one from a candle, can damage it and the surface may become bubbly.
4. To clean and wash it use ph-neutral soap solution, lukewarm water and soft cloth.
That's it! May your precious Prehnite pieces of jewelry have a long a happy life!
Yours truly, Anna