Silver Cleaning Instructions
When cleaning your silver, be sure to wear gloves to protect your skin, and some sort of eye protection if you will be using a brush.  An old toothbrush can be effective at getting in those hard to reach spots, but be gentle so you don't pop any stones or break delicate parts.

Don't use this ammonia based cleaning solution on organic gemstones like pearls, amber, or corals.  Also, emeralds, rubies and sapphires should only be cleaned with warm soapy water.  Garnets can crack if handled roughly, so scrub with care!

Cleaning Gold Jewelry
Unlike silver jewelry, gold jewelry will not tarnish.  It can build up an accumulation of oils from your skin or from moisturizers, sunscreen, etc.  To clean gold jewelry, just put some liquid dish washing detergent in a small container with some warm water.  After letting the piece(s) soak for 5-10 minutes, swirl them in the water or use a toothbrush to gently scrub any accumulation from crevices or around stones.  Again, be careful not to loosen the stone or scrub too hard.

Ultrasonic Jewelry Cleaners
Ultrasonic jewelry cleaners are a great way to really clean up your jewelry, but care must be taken with semiprecious and precious stones.  Ultrasonic jewelry cleaners work by bombarding jewelry with high frequency sound that creates bubbles where the solution comes into contact with solid materials like silver and gold jewelry or stones.  Ultrasonic cleaners are great for getting in all the nooks and crannies that are otherwise inaccessible.

Ultrasonic jewelry cleaners should not be used with emeralds, soft or porous stones, or with stones that have inclusions or have been treated with oil or fillers to improve the appearance of fissures.