To not receive any divine crystals, open the Adventures interface, click "The Bird and the Beast" tab and then uncheck "Gather divine crystals" in the top right corner. The crystals do not need to be obtained while doing divination at friendly convoys: they can be collected at any energy rift across Gielinor. Players may obtain more than one in their inventory, however only one will be counted toward gaining renown. Multiple divine crystals can be turned in daily, but they must be turned in individually. If a crystal is turned in while another is in the bank, both will disappear and will only give renown for the one turned in. This may be a glitch.