Suggestions for Functional Jewelry?

szyzyg asks: "I'm getting married and my girlfriend and I have been looking around at rings and not really getting anywhere. I have all sorts of high concepts about what this should represent and I keep coming back to the thought 'nothing which is useless can be truly beautiful'. So I've been fighting with the idea of how to make a ring which has some use beyond simple symbolism... concepts like using magnetic minerals to turn it into a compass, or engraving some sort of measuring mechanism into it. So here's the challenge I'm putting to the Slashdot bright idea machine: How do I make a simple piece of jewelry useful? Someone out there must have better ideas."

Comments

Diamonds

[Zack]

A lot of people really detest the diamond industry. I for one hate DeBeers, even more than I dislike Microsoft. At least Microsoft doesn't use slave labour, murder people, and abuse their workers. It's hard to justify a shiny peice of carbon with an artifically high price on it when you look at all the human rights violations the companies that mine them cause.

I know there's sociatal pressures that say you need to have a diamond. And why? Because DeBeers invented it!

http://www.africanfront.com/diamondboycott.php

There's one link, I'm sure you can find more with a quick google.