My suggestion is safedice.com
I have invested there and played also, they have only a small money pot, so if you area planning to invest big then you will have a good profit. In addition, this site is operating for more that a year already, I believe they are trusted. But go check for yourself.
But I suggest don't invest more money on any gambling site whether it is trusted or not. In this world, we can't trust anyone when it comes to money. If you invest big money on any one site and if any one player wins big money then mostly you will lose a lot of money in one shot so invest carefully. Particularly if site don't have big bankroll then don't put your money more in that site.