This is what I read online:
However, if the wire wrapped jewelry piece contains opal or pearl, you need to take special care if you use silver polish on your piece. "Jewel Brite" jewelry cleaner is a safe cleaner for both pearls and opals and does a marvelous job restoring the beauty of your wire wrapped jewelry. This product is available for purchase at Rapt Elegance.
Visit Rapt Elegance at www.raptelegance.com
Here is the manufacturer: http://www.jewelbrite.com/
2 hours ago