A submarine http://www.paulgraham.com/submarine.html ?

Unquestionably, and yet interesting.

how about "Gentlemen don't like to buy diamonds at all, but if forced to, they prefer buying them online."

Making women "want and require" diamond rings for weddings is the bigest brainwashing and most successful marketing campaign ever. good job DeBeers.

If you are buying a straightforward diamond solitaire ring, go for it. blue nile, ebay, whatever.

But if you have something particular in mind, suck it up, go to a jeweler and pay full price. But haggle. Don't pay sticker.

A few years ago I gave my daughter a ruby for her birthday from http://www.geolite.com along with a little book on gem synthesis.

Ruby on Rings?

I bought my wife's engagement ring on eBay. It was scary as hell, but I saved a lot of money and she flat out loves it.

I would do it again.

The diamond market is proof that women want diamonds.