Hawaii, Big Island and I've never heard of it? Wow, I'll check this out further. Info says: Puu Mahana Beach (Green Sand beach) is the spectacular erosion product of a volcanic cinder cone near South Point on the Big Island of Hawaii
The pink and lovely. Hiller Lake (Western Australia) Its startling color remains a mystery and while scientists have proven it’s not due to the presence of algae, unlike the other salt lakes down under, they still can’t explain why it’s pink.