Never Put Gold Rings in Silver Cleaner.
There is a simple reason. When you clean silver in any silver cleaner (and we hope you use Silver Shine™ Instant Silver Cleaner by Blitz) there remain tarnish ions in solution. Therefore do not put gold into the same solution.
Silver tarnishes in two ways.
One means is by the sulfur fumes in the air. You may not smell or feel them, but they're there. In urban environments, or if you're in a path of coal fired utility smokestack fumes, or even if you live in an area (like French Lick, Indiana) that has sulfur in the ground, you will see silver tarnish quickly.
First it turns almost golden, then a bit purplish, finally it darkens to brown and then black. If you catch it when it first turns yellowish, you can quickly in one or two strokes with a polishing cloth, remove the tarnish. If you use Blitz 9618 or other Blitz silver cleaning and polishing cloths, the ingredients in the cloth will keep the silver from retarnishing as quickly.
Another way that silver turns black is by exposure to chlorine. Even a small amount will do this. Sitting by, or even walking by a swimming pool can instantly turn silver black. Working with household bleach will cause fumes to drift through the house and the silver will absorb them. Beaches have a lot of salt, and therefore chlorine will be in the air.
Once you immerse your silver in a cleaning solution, silver tarnish atoms will migrate into solution. It's unavoidable. Then, when you place a yellow or white gold ring in the same liquid, the tarnish ions may flock to the gold. Your ring may turn odd shades of colors. It may turn gray, or even brown. Once that happens, you may have to make a trip to your local jeweler and have it professionally cleaned.
This same thing could happen in your jewelry cleaner. If you clean a lot of rings, you should have one cleaner for gold rings and one for silver items. For a small investment, it's best to keep two jars of liquid nearby. We hope that you use Blitz 651, Gem and Jewelry Cleaner.