We found this article on TheKnot.com - chock full of great tips when purchasing your wedding bands - and just had to repost! Here's the story:
Certain buying basics apply to all jewelry, but when it comes to your wedding rings—that pair of bands you'll wear for countless anniversaries to come—a different set of shopping tips apply. Here are our 10 commandments to finding, affording and caring for your all-important wedding bands.
Narrow Your Choices: Because this is one of the few pieces—if not the only piece—of jewelry you'll both shop for and wear, make some preliminary decisions (flip through magazines and browse jewelry stores to get ideas). What color metal are you interested in—yellow or white? Perhaps all the jewelry you own is gold, but he wants a white metal to match his watch. Compromise: Look for bands that have both yellow and white metals. Are you interested in something simple or eye-catching? What about a wedding band with diamonds or colored gems?
Set a Budget: A set of simple gold bands will cost from $125 to $200 each; plain platinum bands run $400 to $600 each. Diamond wedding bands average $742, according to the Diamond Information Center. Engraving on the inside of the wedding band can cost from $1 to $8 per character (letter or number), depending on the font and whether you have it engraved by hand or machine.
Start Browsing Early: Begin looking for your wedding bands at least two months before your wedding date. This gives you time to browse and revisit rings that catch your eye. (Browsing is an important part of the process. Don't skip this step and buy the first thing you see.) Allow even more time if you're interested in a custom piece. Keep in mind that engraving can take up to one month.
Think Practical: Keep your lifestyle in mind at all times. What's the point of buying something pretty if it makes you uncomfortable or you have to remove it often (and increase your chances of losing it)? Remember: You will wear this band every day. The idea is to choose something that becomes a part of your life seamlessly. For example, those who enjoy—or have a career in—sports or music should avoid wide, bulky bands and opt for a slimmer ring with rounded edges (appropriately called a comfort fit). Those who work with their hands a lot might want to avoid the hassle of a diamond engagement ring or wedding band and opt for something simpler that can't trap dirt. If you're allergic to certain metal alloys, invest in platinum. Its purity renders it hypoallergenic for most people.
Do the 20-Year Test: Don't be afraid to be different, but make sure the style you choose is something you'll still want to wear in 20 years (not to mention all the jobs, PTA meetings and social functions in between).
Be Smart About Size: Most people rarely take their wedding bands off; they wear them through summers, winters, exercise, pregnancies—all times when your fingers swell and contract due to heat, cold, water retention and weight gain. To find the size that will best weather all these changes, do your final fitting when you're relaxed and your body temperature is normal. Never finalize your ring size in the morning (you retain salt from the night before), after you've just exercised (your fingers swell) or when you're extremely hot or cold.
Check for Quality: This applies to all rings, but it bears repeating here. Make sure your wedding bands have two marks inside the shank (the "ring" part of the ring): the manufacturer's trademark (proves they stand behind their work) and quality mark (24K or PLAT, for example—proves that it's what they say it is). If the ring consists of two or more metals, make sure there is a quality mark for each.
Keep It Clean: Cleaning your wedding ring is a cinch. For a ring with no stones, simply rub it with a soft, lint-free cloth (chamois is good). Grease can be removed by dipping the band in alcohol; tarnish can be cleaned with a solution of soap, water and a few drops of ammonia (simply brush the ring with a soft toothbrush, rinse–make sure the drain is closed!—and dry with a soft cloth). If your wedding ring has stones, wash and soak it in warm sudsy water, then brush with a soft toothbrush or eyebrow brush, rinse, and pat dry with a soft, lint-free cloth.
Protect Your Investment: Metals are vulnerable. Real life will never allow your rings to be completely blemish-free, but avoid wearing it when doing rough work or playing a sport (which can nick and scratch your rings), and when working with concentrated chlorine, such as that found in bleaches, cleaners and swimming pool disinfectants (which can cause pitting or discoloration to your band). Nicks and scratches are most obvious on matte finishes and most easily affect platinum, which is softer than white or yellow gold on the surface, but more durable overall. Luckily it's easy for your jeweler to reapply the finish or plating on your ring to restore it to its former glory.
Safety First: You'd be surprised how easy it is to lose your ring. Hopefully, you've chosen something that you rarely have to remove. When you absolutely have to take it off, put it in a designated place so you'll always know where it is (pockets don't count)—and never near a sink. If it doesn't fall down the drain on its own, your cat will help it along. The most dangerous time to remove your wedding ring? When you're away from home. That's when rings are most likely to be lost or set down and forgotten.