If you are saying that it's easier to trust on diamonds in comparison to bitcoins, I would say you are mistaken. Diamonds can be counterfeit, and not everyone will notice that right away, so you can be scammed. Bitcoins on the other hand can't be counterfeit, so it's actually easier to trust on them for payments. Also, like it has already been said here, there are a lot of countries that recognize bitcoin as currency or an asset, so I still say they are better than diamonds.