Possibliblity of an earhquake in Qatar is impossible at least in the coming 10.000 years... Actually, this is the reason that there is no mountain in the country. Geological fault lines in Iran is also too far from Qatar(unlike Dubai) to effect here. So no worries...
I strongly believe the success of this project and thinking that current prices are very cheap for such a development if you compare it with other similar properties around the world. So, if you have money invest in Pearl now, it will be too late next year.
Whoever believes the future of Qatar will win! Whoever, sits on the sideline will tell a story to their children what they missed.
Well, it is fun to share ideas with others here(hahaha).