There wasn't any ICO. The project is self-funded. Physical golds were bought by the team behind the project. Then they sold tokens in the market (exchanges and their own marketplace.)
At the beginning of the project, they bought 7200 gram of gold and issued 7200 gold tokens. Until now, they have bought more gold, Now there are more than 11,000 gram of physical gold stored in BullionStar's vaults.