It looks like you are using an ad blocker. That's okay. Who doesn't? But without advertising revenue, we can't keep making this site awesome. Click the link below for instructions on disabling adblock.
You have 12 diamonds. They all look exactly the same the only way to differenciate them is by weight... there is a fake among them. It weighs differently.
You have a balance. You get to weigh the diamonds 3 times - however you want, and you have to figure out which is the fake.
