You will be able to go into so-called diamond factory tours to see the processing of diamonds in Amsterdam. The one I went to was around Van Gogh Museum area. I wouldn't say they are scams, but it certainly was not worth much of a visit. They have a few people on the main floor demonstrating the stages of diamond processing briefly, and then they take you up to their shop, which is really their main intention. I didn't go as far as looking into the quality of the diamonds, but their jewellery designs are surely not very attractive.
Unique Suggestions: I didn't find this tourist trap especially unbearable, as they are not too pushy. You can just take a look for a few minutes and take off.
On the bus tour I took in Amsterdam we were taken to one of the daimond factories "for a tour" of how they cut the diamonds. Who wouldn't want to see how they cut the hardest natural substance known on earth right. Well this is all a ploy to get you in there and then they "hard sell" you on the "wonderful" jewelery you can buy directly from them.
It is very tempting!!!
Don't fall for it. Just remember you can probably buy the same jewelry back home at your favorite jewelry store for the same price if not cheaper. Plus you have the benefit of dealing with a business and people you may know.
Unique Suggestions: Just take a look at the goods and note any piece or style you like and file it away until you get back home.
Fun Alternatives: Go on the tour if you are truely facinated by the diamond industry. But remember your there just to look.
Hmmm of course it was interesting to hear about how diamonds are cut and how to spot the differences between them. Of course it was nice to look at the most expensive diamonds and to dream of being rich. Of course it was nice that everything (including the drinks!) was free.
But it was still a tourist trap to me because all the coaches were brought here so that people will buy something...
The factory is in Nieuwe Uilenburgerstraat 173-175, their (nice Flash-) Website is at http://www.gassandiamonds.com. This is where I took the picture from, too.
Unique Suggestions: Drink! Drink! Drink! And buy a diamond ;-)
Fun Alternatives: A walk along the canals is free, too. And much more beautiful than a greasy fella telling you all about diamonds!
Diamond factory tours, don't get fooled by getting free necklace or bracelet charms just for visiting the factory, they want you to buy something, remember nothing is ever for free. The staff are nice but be upfront and let them know you have no plans on buying diamonds, unless you really are there to buy them.