Thanks to those who attempted to answer the mystery of the blue stones.
‘John the Scientist’ from GNS has confirmed what some already suspected – they are opals. As they do not occur naturally in New Zealand they are most likely to have originated from Australia.
We also asked ‘John the Scientist’ about a clear-orange rock we have in the collection and it turns out that it is Agate. Possibly from the north of New Zealand.
