Yeah, I actually enjoyed this episode and found it the most interesting yet, but there was SO MUCH wrong with it!!!
Who cares if there are diamonds? There are thousands of the things lying around all over the planet and only a few hundred people to trade them with. Supply and demand? Hello?! You might as well be trying to sell pebbles.
The diamonds were cut into diamond shapes just so we knew they were diamonds (aside from all the characters stroking them and going "guuuh, derr diamonds dey is"). Real diamonds look like someone ate broken safety glass and then shat it out.
Hahahahahaha you nearly died of anaphylactic shock lol!!! Don't worry, happens to everyone once in a while!
The dog was Vincent. The dog was Vincent. WTF?
They actually said Adam and fucking Eve.
Slow motion beach scene with stirring music.
"THE ISLAND PLANET TOLD ME"
First Stella Isen picks up a neatly worked fossil of a fish, then she practically trips over a bunch of fossilised (except they weren't fossilised) ape bones after taking no more than a cursory glance over a random patch of beach. I don't care what planet you're on, I've seen enough episodes of Time Team to know archaeology isn't that idiot proof.
No, we didn't know about the spaceship. The one that crashed in the first episode was supposed to be the last one sent, iirc. I wonder why the people on this new one are bothering to be bad guys when they could just set up their own colony on the other side of the planet and be happy.