Kim Zolciak showed off her engagement ring on Twitter. Is it bigger than that other Kim's engagement ring? Zolciak got engaged to Atlanta Falcons player Kroy Biermann earlier this year after giving birth to the couple’s son, Kroy Jagger. She’s been pretty mum on a lot of the details, though a ring photo tweeted on Tuesday shows she’s got...

Titanium is versatile, lightweight and strong, with a silvery-white metallic color. This metal is as strong as steel but is 45% lighter in weight, and is similar to platinum in it’s resistance to tarnishing. This metal has many uses ranging from armor plating, spacecraft and aircraft parts, to jewelry design. Titanium’s strength, durability,...

The standard for sterling silver has remained unchanged since 1300 when Edward I of England established an early trade practice rule for silversmiths, decreeing that sterling must consist of 92.5 percent pure silver alloyed with 7.6 percent copper. The term "sterling" refers to the composition of the metal, never to the weight of a finished...

The most precious metal commonly found in jewelry is the silvery-white metal platinum. It is a relative newcomer to jewelry, having become popular in the past 200 years or so. Like gold, it is rare and heavy, but it is more durable than gold and is sold in purer form. It is sometimes mixed with a little bit of iridium and ruthenium, which...

White gold has the same properties as yellow gold, but it has been mixed with different metals to give it a white color. Instead of the copper and silver used in yellow gold, white gold contains such metals as nickel, zinc, or even platinum. However, white gold should not be confused with platinum, which is much rarer than gold and hence...