"Their hard work has brought us together to celebrate a great moment in Auckland's history and a new milestone in the effort to protect and conserve Great Barrier's natural beauty for future generations to enjoy."
International Dark-Sky Association programme manager John Barentine said the island was a near perfect setting for a world-class sanctuary, including a community largely living off the grid finding meaning in a slower pace of life.
A local resident behind the island sanctuary status, Richard Somerville-Ryan, said it was a move that had been embraced by many in the community.
"We had the right place for it, a remote, pristine environment, that's off the grid. It was the right time for us to ensure we protected the dark sky, and we had the right people," he said.
Great Barrier Local Board Chair Izzy Fordham said the island was just the third place in the world to be afforded sanctuary status and an important step for conservation in the Gulf.
"Ecotourism is extremely important to Great Barrier Island and the Aotea/Great Barrier Island International Dark Sky Sanctuary status will not only provide further tourism development and economic growth opportunities but also ensure the preservation of our exceptional starry skies."
There were now 20 Dark Sky ambassadors on the island ready to share with tourists the history of starry nights.